31048913 has 4 divisors (see below), whose sum is σ = 35484480. Its totient is φ = 26613348.

The previous prime is 31048909. The next prime is 31048943. The reversal of 31048913 is 31984013.

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 31048913 - 2² = 31048909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31048903) 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, 2217773 + ... + 2217786.

It is an arithmetic number, because the mean of its divisors is an integer number (8871120).

Almost surely, 2^31048913 is an apocalyptic number.

It is an amenable number.

31048913 is a deficient number, since it is larger than the sum of its proper divisors (4435567).

31048913 is an equidigital number, since it uses as much as digits as its factorization.

31048913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435566.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 31048913 is about 5572.1551485938. The cubic root of 31048913 is about 314.3031981517.

The spelling of 31048913 in words is "thirty-one million, forty-eight thousand, nine hundred thirteen".