30996999 has 40 divisors (see below), whose sum is σ = 53201280. Its totient is φ = 17787600.

The previous prime is 30996991. The next prime is 30997013. The reversal of 30996999 is 99969903.

It is not a de Polignac number, because 30996999 - 2³ = 30996991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30996991) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16014 + ... + 17844.

It is an arithmetic number, because the mean of its divisors is an integer number (1330032).

Almost surely, 2^30996999 is an apocalyptic number.

30996999 is a deficient number, since it is larger than the sum of its proper divisors (22204281).

30996999 is a wasteful number, since it uses less digits than its factorization.

30996999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873 (or 1864 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 54.

The square root of 30996999 is about 5567.4948585517. The cubic root of 30996999 is about 314.1279280482.

The spelling of 30996999 in words is "thirty million, nine hundred ninety-six thousand, nine hundred ninety-nine".