231310222390 has 32 divisors (see below), whose sum is σ = 474761619360. Its totient is φ = 80382918144.

The previous prime is 231310222357. The next prime is 231310222391. The reversal of 231310222390 is 93222013132.

It is a super-2 number, since 2×231310222390² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310222391) 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, 52330420 + ... + 52334839.

It is an arithmetic number, because the mean of its divisors is an integer number (14836300605).

Almost surely, 2^231310222390 is an apocalyptic number.

231310222390 is an abundant number, since it is smaller than the sum of its proper divisors (243451396970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231310222390 is a wasteful number, since it uses less digits than its factorization.

231310222390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104665296.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 231310222390 in words is "two hundred thirty-one billion, three hundred ten million, two hundred twenty-two thousand, three hundred ninety".