30953986 has 12 divisors (see below), whose sum is σ = 54011718. Its totient is φ = 13265952.

The previous prime is 30953959. The next prime is 30953987. The reversal of 30953986 is 68935903.

It can be written as a sum of positive squares in only one way, i.e., 24354225 + 6599761 = 4935^2 + 2569^2 .

It is not an unprimeable number, because it can be changed into a prime (30953987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157831 + ... + 158026.

Almost surely, 2^30953986 is an apocalyptic number.

30953986 is a deficient number, since it is larger than the sum of its proper divisors (23057732).

30953986 is a wasteful number, since it uses less digits than its factorization.

30953986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315873 (or 315866 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 30953986 is about 5563.6306491355. The cubic root of 30953986 is about 313.9825608663.

The spelling of 30953986 in words is "thirty million, nine hundred fifty-three thousand, nine hundred eighty-six".