231665434 has 96 divisors (see below), whose sum is σ = 484468992. Its totient is φ = 81648000.

The previous prime is 231665419. The next prime is 231665459. The reversal of 231665434 is 434566132.

231665434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231665434.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 854719 + ... + 854989.

It is an arithmetic number, because the mean of its divisors is an integer number (5046552).

Almost surely, 2^231665434 is an apocalyptic number.

231665434 is an abundant number, since it is smaller than the sum of its proper divisors (252803558).

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

231665434 is a wasteful number, since it uses less digits than its factorization.

231665434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 365 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 231665434 is about 15220.5595823544. The cubic root of 231665434 is about 614.1678515585.

The spelling of 231665434 in words is "two hundred thirty-one million, six hundred sixty-five thousand, four hundred thirty-four".