31034232431 has 4 divisors (see below), whose sum is σ = 31034866632. Its totient is φ = 31033598232.

The previous prime is 31034232349. The next prime is 31034232451. The reversal of 31034232431 is 13423243013.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31034232431 is a prime.

It is a super-2 number, since 2×31034232431² (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 31034232431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31034232451) 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, 236945 + ... + 343818.

It is an arithmetic number, because the mean of its divisors is an integer number (7758716658).

Almost surely, 2^31034232431 is an apocalyptic number.

31034232431 is a deficient number, since it is larger than the sum of its proper divisors (634201).

31034232431 is an equidigital number, since it uses as much as digits as its factorization.

31034232431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634200.

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

Adding to 31034232431 its reverse (13423243013), we get a palindrome (44457475444).

The spelling of 31034232431 in words is "thirty-one billion, thirty-four million, two hundred thirty-two thousand, four hundred thirty-one".