31479113 has 4 divisors (see below), whose sum is σ = 31492560. Its totient is φ = 31465668.

The previous prime is 31479101. The next prime is 31479127. The reversal of 31479113 is 31197413.

It is a happy number.

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 31479113 - 2¹⁰ = 31478089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31476113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2195 + ... + 8232.

It is an arithmetic number, because the mean of its divisors is an integer number (7873140).

Almost surely, 2^31479113 is an apocalyptic number.

It is an amenable number.

31479113 is a deficient number, since it is larger than the sum of its proper divisors (13447).

31479113 is a wasteful number, since it uses less digits than its factorization.

31479113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446.

The product of its digits is 2268, while the sum is 29.

The square root of 31479113 is about 5610.6250097471. The cubic root of 31479113 is about 315.7481603200.

The spelling of 31479113 in words is "thirty-one million, four hundred seventy-nine thousand, one hundred thirteen".