31375042 has 32 divisors (see below), whose sum is σ = 52099200. Its totient is φ = 14112000.

The previous prime is 31375039. The next prime is 31375049. The reversal of 31375042 is 24057313.

It is a junction number, because it is equal to n+sod(n) for n = 31374998 and 31375016.

It is not an unprimeable number, because it can be changed into a prime (31375049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78042 + ... + 78442.

It is an arithmetic number, because the mean of its divisors is an integer number (1628100).

Almost surely, 2^31375042 is an apocalyptic number.

31375042 is a deficient number, since it is larger than the sum of its proper divisors (20724158).

31375042 is a wasteful number, since it uses less digits than its factorization.

31375042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 31375042 is about 5601.3428747042. The cubic root of 31375042 is about 315.3998181692.

The spelling of 31375042 in words is "thirty-one million, three hundred seventy-five thousand, forty-two".