31377042 has 24 divisors (see below), whose sum is σ = 68090880. Its totient is φ = 10442520.

The previous prime is 31377029. The next prime is 31377061. The reversal of 31377042 is 24077313.

It is a junction number, because it is equal to n+sod(n) for n = 31376997 and 31377015.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16959 + ... + 18717.

It is an arithmetic number, because the mean of its divisors is an integer number (2837120).

Almost surely, 2^31377042 is an apocalyptic number.

31377042 is an abundant number, since it is smaller than the sum of its proper divisors (36713838).

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

31377042 is a wasteful number, since it uses less digits than its factorization.

31377042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758 (or 2755 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 31377042 is about 5601.5214004768. The cubic root of 31377042 is about 315.4065197404.

The spelling of 31377042 in words is "thirty-one million, three hundred seventy-seven thousand, forty-two".