931213042 has 16 divisors (see below), whose sum is σ = 1410659712. Its totient is φ = 461015200.

The previous prime is 931213013. The next prime is 931213043. The reversal of 931213042 is 240312139.

It is a junction number, because it is equal to n+sod(n) for n = 931212998 and 931213016.

It is not an unprimeable number, because it can be changed into a prime (931213043) 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, 82542 + ... + 93142.

It is an arithmetic number, because the mean of its divisors is an integer number (88166232).

Almost surely, 2^931213042 is an apocalyptic number.

931213042 is a deficient number, since it is larger than the sum of its proper divisors (479446670).

931213042 is a wasteful number, since it uses less digits than its factorization.

931213042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11033.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 931213042 is about 30515.7834898598. The cubic root of 931213042 is about 976.5242140751.

The spelling of 931213042 in words is "nine hundred thirty-one million, two hundred thirteen thousand, forty-two".