231334412531 has 8 divisors (see below), whose sum is σ = 231784111104. Its totient is φ = 230884852680.

The previous prime is 231334412521. The next prime is 231334412549. The reversal of 231334412531 is 135214433132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231334412531 is a prime.

It is a super-3 number, since 3×231334412531³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231334412521) 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, 3688646 + ... + 3750836.

It is an arithmetic number, because the mean of its divisors is an integer number (28973013888).

Almost surely, 2^231334412531 is an apocalyptic number.

231334412531 is a deficient number, since it is larger than the sum of its proper divisors (449698573).

231334412531 is an equidigital number, since it uses as much as digits as its factorization.

231334412531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69361.

The product of its digits is 25920, while the sum is 32.

Adding to 231334412531 its reverse (135214433132), we get a palindrome (366548845663).

The spelling of 231334412531 in words is "two hundred thirty-one billion, three hundred thirty-four million, four hundred twelve thousand, five hundred thirty-one".