231376940 has 24 divisors (see below), whose sum is σ = 497744352. Its totient is φ = 90293120.

The previous prime is 231376939. The next prime is 231376979. The reversal of 231376940 is 49673132.

It is a self number, because there is not a number n which added to its sum of digits gives 231376940.

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, 140264 + ... + 141903.

It is an arithmetic number, because the mean of its divisors is an integer number (20739348).

Almost surely, 2^231376940 is an apocalyptic number.

231376940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231376940 is an abundant number, since it is smaller than the sum of its proper divisors (266367412).

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

231376940 is a wasteful number, since it uses less digits than its factorization.

231376940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282217 (or 282215 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 231376940 is about 15211.0795146170. The cubic root of 231376940 is about 613.9128036686.

The spelling of 231376940 in words is "two hundred thirty-one million, three hundred seventy-six thousand, nine hundred forty".