31420084 has 12 divisors (see below), whose sum is σ = 55196064. Its totient is φ = 15649784.

The previous prime is 31420069. The next prime is 31420099. The reversal of 31420084 is 48002413.

It is an interprime number because it is at equal distance from previous prime (31420069) and next prime (31420099).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13882 + ... + 15985.

It is an arithmetic number, because the mean of its divisors is an integer number (4599672).

Almost surely, 2^31420084 is an apocalyptic number.

It is an amenable number.

31420084 is a deficient number, since it is larger than the sum of its proper divisors (23775980).

31420084 is a wasteful number, since it uses less digits than its factorization.

31420084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30134 (or 30132 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 31420084 is about 5605.3620757271. The cubic root of 31420084 is about 315.5506752939.

Adding to 31420084 its reverse (48002413), we get a palindrome (79422497).

The spelling of 31420084 in words is "thirty-one million, four hundred twenty thousand, eighty-four".