231693396 has 24 divisors (see below), whose sum is σ = 589765344. Its totient is φ = 70210080.

The previous prime is 231693379. The next prime is 231693443. The reversal of 231693396 is 693396132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877495 + ... + 877758.

It is an arithmetic number, because the mean of its divisors is an integer number (24573556).

Almost surely, 2^231693396 is an apocalyptic number.

It is an amenable number.

231693396 is an abundant number, since it is smaller than the sum of its proper divisors (358071948).

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

231693396 is a wasteful number, since it uses less digits than its factorization.

231693396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755271 (or 1755269 counting only the distinct ones).

The product of its digits is 157464, while the sum is 42.

The square root of 231693396 is about 15221.4781148218. The cubic root of 231693396 is about 614.1925605685.

It can be divided in two parts, 23169 and 3396, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 231693396 in words is "two hundred thirty-one million, six hundred ninety-three thousand, three hundred ninety-six".