31002042 has 16 divisors (see below), whose sum is σ = 62348832. Its totient is φ = 10276560.

The previous prime is 31002029. The next prime is 31002061. The reversal of 31002042 is 24020013.

It is a super-2 number, since 2×31002042² = 1922253216339528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13188 + ... + 15359.

It is an arithmetic number, because the mean of its divisors is an integer number (3896802).

Almost surely, 2^31002042 is an apocalyptic number.

31002042 is an abundant number, since it is smaller than the sum of its proper divisors (31346790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31002042 is a wasteful number, since it uses less digits than its factorization.

31002042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28733.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 31002042 is about 5567.9477368237. The cubic root of 31002042 is about 314.1449626138.

Adding to 31002042 its reverse (24020013), we get a palindrome (55022055).

The spelling of 31002042 in words is "thirty-one million, two thousand, forty-two".