231302313331 has 16 divisors (see below), whose sum is σ = 244277208000. Its totient is φ = 218702915200.

The previous prime is 231302313329. The next prime is 231302313343. The reversal of 231302313331 is 133313203132.

It is not a de Polignac number, because 231302313331 - 2¹ = 231302313329 is a prime.

It is a super-2 number, since 2×231302313331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231302313296 and 231302313305.

It is not an unprimeable number, because it can be changed into a prime (231302313371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70180 + ... + 683761.

It is an arithmetic number, because the mean of its divisors is an integer number (15267325500).

Almost surely, 2^231302313331 is an apocalyptic number.

231302313331 is a deficient number, since it is larger than the sum of its proper divisors (12974894669).

231302313331 is a wasteful number, since it uses less digits than its factorization.

231302313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754190.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 231302313331 its reverse (133313203132), we get a palindrome (364615516463).

The spelling of 231302313331 in words is "two hundred thirty-one billion, three hundred two million, three hundred thirteen thousand, three hundred thirty-one".