231976434 has 24 divisors (see below), whose sum is σ = 489661200. Its totient is φ = 73255032.

The previous prime is 231976429. The next prime is 231976439. The reversal of 231976434 is 434679132.

It is an interprime number because it is at equal distance from previous prime (231976429) and next prime (231976439).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231976392 and 231976401.

It is not an unprimeable number, because it can be changed into a prime (231976439) 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, 51384 + ... + 55715.

It is an arithmetic number, because the mean of its divisors is an integer number (20402550).

Almost surely, 2^231976434 is an apocalyptic number.

231976434 is an abundant number, since it is smaller than the sum of its proper divisors (257684766).

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

231976434 is a wasteful number, since it uses less digits than its factorization.

231976434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107142 (or 107123 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 231976434 is about 15230.7726002327. The cubic root of 231976434 is about 614.4425591975.

The spelling of 231976434 in words is "two hundred thirty-one million, nine hundred seventy-six thousand, four hundred thirty-four".