231310331120 has 40 divisors (see below), whose sum is σ = 586687114800. Its totient is φ = 84112847360.

The previous prime is 231310331117. The next prime is 231310331123. The reversal of 231310331120 is 21133013132.

It is an interprime number because it is at equal distance from previous prime (231310331117) and next prime (231310331123).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 231310331092 and 231310331101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310331123) 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, 131425445 + ... + 131427204.

It is an arithmetic number, because the mean of its divisors is an integer number (14667177870).

Almost surely, 2^231310331120 is an apocalyptic number.

231310331120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231310331120 is an abundant number, since it is smaller than the sum of its proper divisors (355376783680).

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

231310331120 is a wasteful number, since it uses less digits than its factorization.

231310331120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262852673 (or 262852667 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 231310331120 its reverse (21133013132), we get a palindrome (252443344252).

The spelling of 231310331120 in words is "two hundred thirty-one billion, three hundred ten million, three hundred thirty-one thousand, one hundred twenty".