Search a number
-
+
31302214141 = 112845655831
BaseRepresentation
bin11101001001110000…
…011110000111111101
32222210111122020100111
4131021300132013331
51003101331323031
622214031030021
72155461300352
oct351160360775
988714566314
1031302214141
1112303313870
12609706b311
132c4b0c6b03
14172d384629
15c331051b1
hex749c1e1fd

31302214141 has 4 divisors (see below), whose sum is σ = 34147869984. Its totient is φ = 28456558300.

The previous prime is 31302214109. The next prime is 31302214187. The reversal of 31302214141 is 14141220313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31302214141 - 25 = 31302214109 is a prime.

It is a super-2 number, since 2×313022141412 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302014141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1422827905 + ... + 1422827926.

It is an arithmetic number, because the mean of its divisors is an integer number (8536967496).

Almost surely, 231302214141 is an apocalyptic number.

It is an amenable number.

31302214141 is a deficient number, since it is larger than the sum of its proper divisors (2845655843).

31302214141 is a wasteful number, since it uses less digits than its factorization.

31302214141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845655842.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31302214141 its reverse (14141220313), we get a palindrome (45443434454).

The spelling of 31302214141 in words is "thirty-one billion, three hundred two million, two hundred fourteen thousand, one hundred forty-one".

Divisors: 1 11 2845655831 31302214141