31420017 has 12 divisors (see below), whose sum is σ = 46350720. Its totient is φ = 20500728.

The previous prime is 31420009. The next prime is 31420027. The reversal of 31420017 is 71002413.

It is not a de Polignac number, because 31420017 - 2³ = 31420009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31420027) 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, 36717 + ... + 37562.

It is an arithmetic number, because the mean of its divisors is an integer number (3862560).

Almost surely, 2^31420017 is an apocalyptic number.

It is an amenable number.

31420017 is a deficient number, since it is larger than the sum of its proper divisors (14930703).

31420017 is a wasteful number, since it uses less digits than its factorization.

31420017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74332 (or 74329 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 31420017 is about 5605.3560993036. The cubic root of 31420017 is about 315.5504510009.

The spelling of 31420017 in words is "thirty-one million, four hundred twenty thousand, seventeen".