231975123 has 16 divisors (see below), whose sum is σ = 329508480. Its totient is φ = 144742464.

The previous prime is 231975119. The next prime is 231975137. The reversal of 231975123 is 321579132.

It is not a de Polignac number, because 231975123 - 2² = 231975119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231975103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19786 + ... + 29247.

It is an arithmetic number, because the mean of its divisors is an integer number (20594280).

Almost surely, 2^231975123 is an apocalyptic number.

231975123 is a deficient number, since it is larger than the sum of its proper divisors (97533357).

231975123 is a wasteful number, since it uses less digits than its factorization.

231975123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49138.

The product of its digits is 11340, while the sum is 33.

The square root of 231975123 is about 15230.7295623027. The cubic root of 231975123 is about 614.4414017011.

The spelling of 231975123 in words is "two hundred thirty-one million, nine hundred seventy-five thousand, one hundred twenty-three".