30961332 has 48 divisors (see below), whose sum is σ = 80633280. Its totient is φ = 10273824.

The previous prime is 30961331. The next prime is 30961339. The reversal of 30961332 is 23316903.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 30961296 and 30961305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30961331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30058 + ... + 31070.

It is an arithmetic number, because the mean of its divisors is an integer number (1679860).

Almost surely, 2^30961332 is an apocalyptic number.

It is an amenable number.

30961332 is an abundant number, since it is smaller than the sum of its proper divisors (49671948).

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

30961332 is a wasteful number, since it uses less digits than its factorization.

30961332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 30961332 is about 5564.2907903883. The cubic root of 30961332 is about 314.0073970156.

The spelling of 30961332 in words is "thirty million, nine hundred sixty-one thousand, three hundred thirty-two".