31074890 has 32 divisors (see below), whose sum is σ = 69738624. Its totient is φ = 9685440.

The previous prime is 31074889. The next prime is 31074893. The reversal of 31074890 is 9847013.

It is not an unprimeable number, because it can be changed into a prime (31074893) 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, 19409 + ... + 20948.

It is an arithmetic number, because the mean of its divisors is an integer number (2179332).

Almost surely, 2^31074890 is an apocalyptic number.

31074890 is an abundant number, since it is smaller than the sum of its proper divisors (38663734).

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

31074890 is a wasteful number, since it uses less digits than its factorization.

31074890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40382.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 31074890 is about 5574.4856264951. The cubic root of 31074890 is about 314.3908273950.

It can be divided in two parts, 3107 and 4890, that added together give a palindrome (7997).

The spelling of 31074890 in words is "thirty-one million, seventy-four thousand, eight hundred ninety".