31325901 has 4 divisors (see below), whose sum is σ = 41767872. Its totient is φ = 20883932.

The previous prime is 31325881. The next prime is 31325911. The reversal of 31325901 is 10952313.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 31325901 - 2⁵ = 31325869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31325911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5220981 + ... + 5220986.

It is an arithmetic number, because the mean of its divisors is an integer number (10441968).

Almost surely, 2^31325901 is an apocalyptic number.

It is an amenable number.

31325901 is a deficient number, since it is larger than the sum of its proper divisors (10441971).

31325901 is a wasteful number, since it uses less digits than its factorization.

31325901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10441970.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 31325901 is about 5596.9546183617. The cubic root of 31325901 is about 315.2350676722.

The spelling of 31325901 in words is "thirty-one million, three hundred twenty-five thousand, nine hundred one".