961731612 has 36 divisors (see below), whose sum is σ = 2470902616. Its totient is φ = 315321120.

The previous prime is 961731583. The next prime is 961731613. The reversal of 961731612 is 216137169.

961731612 is a `hidden beast` number, since 9 + 6 + 1 + 7 + 31 + 612 = 666.

961731612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961731613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216778 + ... + 221169.

Almost surely, 2^961731612 is an apocalyptic number.

It is an amenable number.

961731612 is an abundant number, since it is smaller than the sum of its proper divisors (1509171004).

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

961731612 is a wasteful number, since it uses less digits than its factorization.

961731612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438018 (or 438013 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 961731612 is about 31011.7979485228. The cubic root of 961731612 is about 987.0776015826.

The spelling of 961731612 in words is "nine hundred sixty-one million, seven hundred thirty-one thousand, six hundred twelve".