Search a number
-
+
31232343041 = 69494494509
BaseRepresentation
bin11101000101100101…
…111011110000000001
32222121122011102012222
4131011211323300001
51002430434434131
622203053300425
72153652351464
oct350545736001
988548142188
1031232343041
1112277930659
126077794715
132c397a1b73
141723d972db
15c2be0287b
hex74597bc01

31232343041 has 4 divisors (see below), whose sum is σ = 31236844500. Its totient is φ = 31227841584.

The previous prime is 31232343031. The next prime is 31232343049. The reversal of 31232343041 is 14034323213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14034323213 = 49128583143.

It can be written as a sum of positive squares in 2 ways, for example, as 18631158016 + 12601185025 = 136496^2 + 112255^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232343041 - 222 = 31228148737 is a prime.

It is a super-2 number, since 2×312323430412 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31232343041.

It is not an unprimeable number, because it can be changed into a prime (31232343049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2240306 + ... + 2254203.

It is an arithmetic number, because the mean of its divisors is an integer number (7809211125).

Almost surely, 231232343041 is an apocalyptic number.

It is an amenable number.

31232343041 is a deficient number, since it is larger than the sum of its proper divisors (4501459).

31232343041 is an equidigital number, since it uses as much as digits as its factorization.

31232343041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501458.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 31232343041 its reverse (14034323213), we get a palindrome (45266666254).

The spelling of 31232343041 in words is "thirty-one billion, two hundred thirty-two million, three hundred forty-three thousand, forty-one".

Divisors: 1 6949 4494509 31232343041