231215148 has 30 divisors (see below), whose sum is σ = 604442916. Its totient is φ = 77071608.

The previous prime is 231215129. The next prime is 231215189. The reversal of 231215148 is 841512132.

231215148 is a `hidden beast` number, since 23 + 121 + 514 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 356490 + ... + 357137.

Almost surely, 2^231215148 is an apocalyptic number.

It is an amenable number.

231215148 is an abundant number, since it is smaller than the sum of its proper divisors (373227768).

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

231215148 is a wasteful number, since it uses less digits than its factorization.

231215148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713643 (or 713632 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 231215148 is about 15205.7603558651. The cubic root of 231215148 is about 613.7696759786.

The spelling of 231215148 in words is "two hundred thirty-one million, two hundred fifteen thousand, one hundred forty-eight".