231515150 has 24 divisors (see below), whose sum is σ = 437051640. Its totient is φ = 91222560.

The previous prime is 231515143. The next prime is 231515153. The reversal of 231515150 is 51515132.

It is a happy number.

231515150 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231515153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31205 + ... + 37904.

It is an arithmetic number, because the mean of its divisors is an integer number (18210485).

Almost surely, 2^231515150 is an apocalyptic number.

231515150 is a deficient number, since it is larger than the sum of its proper divisors (205536490).

231515150 is a wasteful number, since it uses less digits than its factorization.

231515150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69188 (or 69183 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 231515150 is about 15215.6219064486. The cubic root of 231515150 is about 614.0350169421.

The spelling of 231515150 in words is "two hundred thirty-one million, five hundred fifteen thousand, one hundred fifty".