31970441 has 4 divisors (see below), whose sum is σ = 33072900. Its totient is φ = 30867984.

The previous prime is 31970399. The next prime is 31970459. The reversal of 31970441 is 14407913.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25210441 + 6760000 = 5021^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 31970441 - 2²² = 27776137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1102429 = 31970441 / (3 + 1 + 9 + 7 + 0 + 4 + 4 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31970041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551186 + ... + 551243.

It is an arithmetic number, because the mean of its divisors is an integer number (8268225).

Almost surely, 2^31970441 is an apocalyptic number.

It is an amenable number.

31970441 is a deficient number, since it is larger than the sum of its proper divisors (1102459).

31970441 is a wasteful number, since it uses less digits than its factorization.

31970441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102458.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 31970441 is about 5654.2409747021. The cubic root of 31970441 is about 317.3824261380.

The spelling of 31970441 in words is "thirty-one million, nine hundred seventy thousand, four hundred forty-one".