231313241020 has 48 divisors (see below), whose sum is σ = 491320922400. Its totient is φ = 91466101760.

The previous prime is 231313240987. The next prime is 231313241039. The reversal of 231313241020 is 20142313132.

It is a super-2 number, since 2×231313241020² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231313240982 and 231313241000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10560480 + ... + 10582360.

It is an arithmetic number, because the mean of its divisors is an integer number (10235852550).

Almost surely, 2^231313241020 is an apocalyptic number.

231313241020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231313241020 is an abundant number, since it is smaller than the sum of its proper divisors (260007681380).

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

231313241020 is a wasteful number, since it uses less digits than its factorization.

231313241020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27918 (or 27916 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231313241020 its reverse (20142313132), we get a palindrome (251455554152).

The spelling of 231313241020 in words is "two hundred thirty-one billion, three hundred thirteen million, two hundred forty-one thousand, twenty".