31879401 has 4 divisors (see below), whose sum is σ = 42505872. Its totient is φ = 21252932.

The previous prime is 31879399. The next prime is 31879409. The reversal of 31879401 is 10497813.

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 31879401 - 2¹ = 31879399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31879409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5313231 + ... + 5313236.

It is an arithmetic number, because the mean of its divisors is an integer number (10626468).

Almost surely, 2^31879401 is an apocalyptic number.

It is an amenable number.

31879401 is a deficient number, since it is larger than the sum of its proper divisors (10626471).

31879401 is a wasteful number, since it uses less digits than its factorization.

31879401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10626470.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 31879401 is about 5646.1846409766. The cubic root of 31879401 is about 317.0808771072.

The spelling of 31879401 in words is "thirty-one million, eight hundred seventy-nine thousand, four hundred one".