31420052 has 12 divisors (see below), whose sum is σ = 55806240. Its totient is φ = 15475416.

The previous prime is 31420033. The next prime is 31420069. The reversal of 31420052 is 25002413.

It is a self number, because there is not a number n which added to its sum of digits gives 31420052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58352 + ... + 58887.

It is an arithmetic number, because the mean of its divisors is an integer number (4650520).

Almost surely, 2^31420052 is an apocalyptic number.

It is an amenable number.

31420052 is a deficient number, since it is larger than the sum of its proper divisors (24386188).

31420052 is a wasteful number, since it uses less digits than its factorization.

31420052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117310 (or 117308 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 31420052 is about 5605.3592213167. The cubic root of 31420052 is about 315.5505681689.

Adding to 31420052 its reverse (25002413), we get a palindrome (56422465).

The spelling of 31420052 in words is "thirty-one million, four hundred twenty thousand, fifty-two".