103131212320 has 24 divisors (see below), whose sum is σ = 243647489484. Its totient is φ = 41252484864.

The previous prime is 103131212293. The next prime is 103131212323. The reversal of 103131212320 is 23212131301.

It can be written as a sum of positive squares in 2 ways, for example, as 101993364496 + 1137847824 = 319364^2 + 33732^2 .

It is not an unprimeable number, because it can be changed into a prime (103131212323) 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, 322284879 + ... + 322285198.

Almost surely, 2^103131212320 is an apocalyptic number.

103131212320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103131212320 is an abundant number, since it is smaller than the sum of its proper divisors (140516277164).

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

103131212320 is an equidigital number, since it uses as much as digits as its factorization.

103131212320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644570092 (or 644570084 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 103131212320 its reverse (23212131301), we get a palindrome (126343343621).

The spelling of 103131212320 in words is "one hundred three billion, one hundred thirty-one million, two hundred twelve thousand, three hundred twenty".