231311123300 has 18 divisors (see below), whose sum is σ = 501945137778. Its totient is φ = 92524449280.

The previous prime is 231311123291. The next prime is 231311123321. The reversal of 231311123300 is 3321113132.

It can be written as a sum of positive squares in 3 ways, for example, as 34806872356 + 196504250944 = 186566^2 + 443288^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1156555517 + ... + 1156555716.

Almost surely, 2^231311123300 is an apocalyptic number.

231311123300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231311123300 is an abundant number, since it is smaller than the sum of its proper divisors (270634014478).

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

231311123300 is a wasteful number, since it uses less digits than its factorization.

231311123300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313111247 (or 2313111240 counting only the distinct ones).

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

Adding to 231311123300 its reverse (3321113132), we get a palindrome (234632236432).

The spelling of 231311123300 in words is "two hundred thirty-one billion, three hundred eleven million, one hundred twenty-three thousand, three hundred".