31040970 has 32 divisors (see below), whose sum is σ = 75273408. Its totient is φ = 8191488.

The previous prime is 31040953. The next prime is 31040983. The reversal of 31040970 is 7904013.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31040970.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2424 + ... + 8243.

It is an arithmetic number, because the mean of its divisors is an integer number (2352294).

Almost surely, 2^31040970 is an apocalyptic number.

31040970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31040970 is an abundant number, since it is smaller than the sum of its proper divisors (44232438).

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

31040970 is a wasteful number, since it uses less digits than its factorization.

31040970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10774.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 31040970 is about 5571.4423626203. The cubic root of 31040970 is about 314.2763939582.

Adding to 31040970 its reverse (7904013), we get a palindrome (38944983).

The spelling of 31040970 in words is "thirty-one million, forty thousand, nine hundred seventy".