31700901 has 4 divisors (see below), whose sum is σ = 42267872. Its totient is φ = 21133932.

The previous prime is 31700891. The next prime is 31700909. The reversal of 31700901 is 10900713.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10900713 = 3 ⋅3633571.

It is not a de Polignac number, because 31700901 - 2¹⁷ = 31569829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31700909) 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, 5283481 + ... + 5283486.

It is an arithmetic number, because the mean of its divisors is an integer number (10566968).

Almost surely, 2^31700901 is an apocalyptic number.

It is an amenable number.

31700901 is a deficient number, since it is larger than the sum of its proper divisors (10566971).

31700901 is a wasteful number, since it uses less digits than its factorization.

31700901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10566970.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 31700901 is about 5630.3553173845. The cubic root of 31700901 is about 316.4879665194.

The spelling of 31700901 in words is "thirty-one million, seven hundred thousand, nine hundred one".