31020479 has 12 divisors (see below), whose sum is σ = 36228744. Its totient is φ = 26483184.

The previous prime is 31020463. The next prime is 31020481. The reversal of 31020479 is 97402013.

It is not a de Polignac number, because 31020479 - 2⁴ = 31020463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12749 + ... + 14985.

It is an arithmetic number, because the mean of its divisors is an integer number (3019062).

Almost surely, 2^31020479 is an apocalyptic number.

31020479 is a deficient number, since it is larger than the sum of its proper divisors (5208265).

31020479 is a wasteful number, since it uses less digits than its factorization.

31020479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534 (or 2527 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 31020479 is about 5569.6031276923. The cubic root of 31020479 is about 314.2072245653.

The spelling of 31020479 in words is "thirty-one million, twenty thousand, four hundred seventy-nine".