231097536648 has 160 divisors (see below), whose sum is σ = 747668892960. Its totient is φ = 65910136320.

The previous prime is 231097536647. The next prime is 231097536707. The reversal of 231097536648 is 846635790132.

231097536648 is a `hidden beast` number, since 2 + 3 + 10 + 97 + 536 + 6 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 231097536594 and 231097536603.

It is not an unprimeable number, because it can be changed into a prime (231097536641) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 832386 + ... + 1074737.

It is an arithmetic number, because the mean of its divisors is an integer number (4672930581).

It is a 1-persistent number, because it is pandigital, but 2⋅231097536648 = 462195073296 is not.

Almost surely, 2^231097536648 is an apocalyptic number.

It is an amenable number.

231097536648 is an abundant number, since it is smaller than the sum of its proper divisors (516571356312).

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

231097536648 is a wasteful number, since it uses less digits than its factorization.

231097536648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907169 (or 1907156 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 231097536648 in words is "two hundred thirty-one billion, ninety-seven million, five hundred thirty-six thousand, six hundred forty-eight".