31934913 has 4 divisors (see below), whose sum is σ = 42579888. Its totient is φ = 21289940.

The previous prime is 31934863. The next prime is 31934921. The reversal of 31934913 is 31943913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31934913 - 2⁸ = 31934657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31934933) 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 3 ways as a sum of consecutive naturals, for example, 5322483 + ... + 5322488.

It is an arithmetic number, because the mean of its divisors is an integer number (10644972).

Almost surely, 2^31934913 is an apocalyptic number.

It is an amenable number.

31934913 is a deficient number, since it is larger than the sum of its proper divisors (10644975).

31934913 is a wasteful number, since it uses less digits than its factorization.

31934913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10644974.

The product of its digits is 8748, while the sum is 33.

The square root of 31934913 is about 5651.0983888090. The cubic root of 31934913 is about 317.2648160169.

The spelling of 31934913 in words is "thirty-one million, nine hundred thirty-four thousand, nine hundred thirteen".