231613776400 has 120 divisors (see below), whose sum is σ = 560289139200. Its totient is φ = 92008734720.

The previous prime is 231613776391. The next prime is 231613776437. The reversal of 231613776400 is 4677316132.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40047909 + ... + 40053691.

It is an arithmetic number, because the mean of its divisors is an integer number (4669076160).

Almost surely, 2^231613776400 is an apocalyptic number.

231613776400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231613776400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280144569600).

231613776400 is an abundant number, since it is smaller than the sum of its proper divisors (328675362800).

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

231613776400 is a wasteful number, since it uses less digits than its factorization.

231613776400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473 (or 6462 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 231613776400 in words is "two hundred thirty-one billion, six hundred thirteen million, seven hundred seventy-six thousand, four hundred".