31234234431 has 24 divisors (see below), whose sum is σ = 42217628544. Its totient is φ = 20540362000.

The previous prime is 31234234403. The next prime is 31234234433. The reversal of 31234234431 is 13443243213.

It is a happy number.

It is not a de Polignac number, because 31234234431 - 2¹⁹ = 31233710143 is a prime.

It is a super-2 number, since 2×31234234431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31234234433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8619286 + ... + 8622908.

It is an arithmetic number, because the mean of its divisors is an integer number (1759067856).

Almost surely, 2^31234234431 is an apocalyptic number.

31234234431 is a deficient number, since it is larger than the sum of its proper divisors (10983394113).

31234234431 is a wasteful number, since it uses less digits than its factorization.

31234234431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4091 (or 3984 counting only the distinct ones).

The product of its digits is 20736, while the sum is 30.

Adding to 31234234431 its reverse (13443243213), we get a palindrome (44677477644).

The spelling of 31234234431 in words is "thirty-one billion, two hundred thirty-four million, two hundred thirty-four thousand, four hundred thirty-one".