30953907 has 20 divisors (see below), whose sum is σ = 48675880. Its totient is φ = 19548864.

The previous prime is 30953899. The next prime is 30953927. The reversal of 30953907 is 70935903.

30953907 is nontrivially palindromic in base 7.

It is not a de Polignac number, because 30953907 - 2³ = 30953899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30953927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8518 + ... + 11595.

It is an arithmetic number, because the mean of its divisors is an integer number (2433794).

Almost surely, 2^30953907 is an apocalyptic number.

30953907 is a deficient number, since it is larger than the sum of its proper divisors (17721973).

30953907 is a wasteful number, since it uses less digits than its factorization.

30953907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20144 (or 20135 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 36.

The square root of 30953907 is about 5563.6235494505. The cubic root of 30953907 is about 313.9822937532.

The spelling of 30953907 in words is "thirty million, nine hundred fifty-three thousand, nine hundred seven".