231251630 has 16 divisors (see below), whose sum is σ = 429681024. Its totient is φ = 89516640.

The previous prime is 231251623. The next prime is 231251651. The reversal of 231251630 is 36152132.

It is a junction number, because it is equal to n+sod(n) for n = 231251596 and 231251605.

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, 372677 + ... + 373296.

It is an arithmetic number, because the mean of its divisors is an integer number (26855064).

Almost surely, 2^231251630 is an apocalyptic number.

231251630 is a deficient number, since it is larger than the sum of its proper divisors (198429394).

231251630 is a wasteful number, since it uses less digits than its factorization.

231251630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746011.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 231251630 is about 15206.9599197210. The cubic root of 231251630 is about 613.8019552474.

The spelling of 231251630 in words is "two hundred thirty-one million, two hundred fifty-one thousand, six hundred thirty".