31232234431 has 8 divisors (see below), whose sum is σ = 31717764000. Its totient is φ = 30750210912.

The previous prime is 31232234399. The next prime is 31232234443. The reversal of 31232234431 is 13443223213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31232234431 - 2⁵ = 31232234399 is a prime.

It is a super-2 number, since 2×31232234431² (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 31232234431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232234491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858556 + ... + 894193.

It is an arithmetic number, because the mean of its divisors is an integer number (3964720500).

Almost surely, 2^31232234431 is an apocalyptic number.

31232234431 is a deficient number, since it is larger than the sum of its proper divisors (485529569).

31232234431 is a wasteful number, since it uses less digits than its factorization.

31232234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753025.

The product of its digits is 10368, while the sum is 28.

Adding to 31232234431 its reverse (13443223213), we get a palindrome (44675457644).

The spelling of 31232234431 in words is "thirty-one billion, two hundred thirty-two million, two hundred thirty-four thousand, four hundred thirty-one".