231310023331 has 4 divisors (see below), whose sum is σ = 231321630232. Its totient is φ = 231298416432.

The previous prime is 231310023317. The next prime is 231310023457. The reversal of 231310023331 is 133320013132.

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

It is a cyclic number.

It is not a de Polignac number, because 231310023331 - 2¹⁵ = 231309990563 is a prime.

It is a super-2 number, since 2×231310023331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231310023311) 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, 5773506 + ... + 5813431.

It is an arithmetic number, because the mean of its divisors is an integer number (57830407558).

Almost surely, 2^231310023331 is an apocalyptic number.

231310023331 is a deficient number, since it is larger than the sum of its proper divisors (11606901).

231310023331 is a wasteful number, since it uses less digits than its factorization.

231310023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11606900.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 231310023331 its reverse (133320013132), we get a palindrome (364630036463).

The spelling of 231310023331 in words is "two hundred thirty-one billion, three hundred ten million, twenty-three thousand, three hundred thirty-one".