961707231 has 12 divisors (see below), whose sum is σ = 1391923000. Its totient is φ = 639850320.

The previous prime is 961707217. The next prime is 961707233. The reversal of 961707231 is 132707169.

It is a happy number.

961707231 is a `hidden beast` number, since 9 + 617 + 0 + 7 + 2 + 31 = 666.

It is not a de Polignac number, because 961707231 - 2⁶ = 961707167 is a prime.

It is a super-2 number, since 2×961707231² = 1849761596315374722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961707233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102580 + ... + 111561.

Almost surely, 2^961707231 is an apocalyptic number.

961707231 is a deficient number, since it is larger than the sum of its proper divisors (430215769).

961707231 is a wasteful number, since it uses less digits than its factorization.

961707231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214646 (or 214643 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 961707231 is about 31011.4048536986. The cubic root of 961707231 is about 987.0692603288.

The spelling of 961707231 in words is "nine hundred sixty-one million, seven hundred seven thousand, two hundred thirty-one".