231667812648 has 48 divisors (see below), whose sum is σ = 629241893280. Its totient is φ = 77000052384.

The previous prime is 231667812643. The next prime is 231667812661. The reversal of 231667812648 is 846218766132.

It is a happy number.

231667812648 is a `hidden beast` number, since 2 + 316 + 67 + 8 + 1 + 264 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 231667812594 and 231667812603.

It is not an unprimeable number, because it can be changed into a prime (231667812641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4611340 + ... + 4661307.

It is an arithmetic number, because the mean of its divisors is an integer number (13109206110).

Almost surely, 2^231667812648 is an apocalyptic number.

It is an amenable number.

231667812648 is an abundant number, since it is smaller than the sum of its proper divisors (397574080632).

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

231667812648 is a wasteful number, since it uses less digits than its factorization.

231667812648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9273006 (or 9272999 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 231667812648 in words is "two hundred thirty-one billion, six hundred sixty-seven million, eight hundred twelve thousand, six hundred forty-eight".