31242076 has 12 divisors (see below), whose sum is σ = 54819072. Its totient is φ = 15579488.

The previous prime is 31242067. The next prime is 31242089. The reversal of 31242076 is 67024213.

It is a self number, because there is not a number n which added to its sum of digits gives 31242076.

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, 8665 + ... + 11728.

It is an arithmetic number, because the mean of its divisors is an integer number (4568256).

Almost surely, 2^31242076 is an apocalyptic number.

It is an amenable number.

31242076 is a deficient number, since it is larger than the sum of its proper divisors (23576996).

31242076 is a wasteful number, since it uses less digits than its factorization.

31242076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20780 (or 20778 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 31242076 is about 5589.4611547089. The cubic root of 31242076 is about 314.9536372514.

Adding to 31242076 its reverse (67024213), we get a palindrome (98266289).

It can be divided in two parts, 3124207 and 6, that added together give a palindrome (3124213).

The spelling of 31242076 in words is "thirty-one million, two hundred forty-two thousand, seventy-six".