31475013 has 16 divisors (see below), whose sum is σ = 43739136. Its totient is φ = 20110320.

The previous prime is 31475009. The next prime is 31475029. The reversal of 31475013 is 31057413.

It is not a de Polignac number, because 31475013 - 2² = 31475009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31475053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8370 + ... + 11532.

It is an arithmetic number, because the mean of its divisors is an integer number (2733696).

Almost surely, 2^31475013 is an apocalyptic number.

It is an amenable number.

31475013 is a deficient number, since it is larger than the sum of its proper divisors (12264123).

31475013 is a wasteful number, since it uses less digits than its factorization.

31475013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 31475013 is about 5610.2596196611. The cubic root of 31475013 is about 315.7344515087.

The spelling of 31475013 in words is "thirty-one million, four hundred seventy-five thousand, thirteen".