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31031422441 = 3743109178939
BaseRepresentation
bin11100111001100111…
…011110110111101001
32222002122002120222021
4130321213132313221
51002023021004231
622131115024441
72145662511235
oct347147366751
988078076867
1031031422441
1112184479a78
12602043b121
132c06c84836
1417054155c5
15c19465811
hex7399dede9

31031422441 has 16 divisors (see below), whose sum is σ = 32910644800. Its totient is φ = 29219859648.

The previous prime is 31031422439. The next prime is 31031422469. The reversal of 31031422441 is 14422413013.

It is a cyclic number.

It is not a de Polignac number, because 31031422441 - 21 = 31031422439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31031426441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83950 + ... + 262888.

It is an arithmetic number, because the mean of its divisors is an integer number (2056915300).

Almost surely, 231031422441 is an apocalyptic number.

It is an amenable number.

31031422441 is a deficient number, since it is larger than the sum of its proper divisors (1879222359).

31031422441 is a wasteful number, since it uses less digits than its factorization.

31031422441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179128.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31031422441 its reverse (14422413013), we get a palindrome (45453835454).

The spelling of 31031422441 in words is "thirty-one billion, thirty-one million, four hundred twenty-two thousand, four hundred forty-one".

Divisors: 1 37 43 109 1591 4033 4687 173419 178939 6620743 7694377 19504351 284691949 721660987 838687093 31031422441