31369042 has 16 divisors (see below), whose sum is σ = 47672064. Its totient is φ = 15480000.

The previous prime is 31369021. The next prime is 31369043. The reversal of 31369042 is 24096313.

It is a self number, because there is not a number n which added to its sum of digits gives 31369042.

It is not an unprimeable number, because it can be changed into a prime (31369043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72567 + ... + 72997.

It is an arithmetic number, because the mean of its divisors is an integer number (2979504).

Almost surely, 2^31369042 is an apocalyptic number.

31369042 is a deficient number, since it is larger than the sum of its proper divisors (16303022).

31369042 is a wasteful number, since it uses less digits than its factorization.

31369042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 31369042 is about 5600.8072632434. The cubic root of 31369042 is about 315.3797117467.

The spelling of 31369042 in words is "thirty-one million, three hundred sixty-nine thousand, forty-two".