31864485 has 8 divisors (see below), whose sum is σ = 50983200. Its totient is φ = 16994384.

The previous prime is 31864471. The next prime is 31864489. The reversal of 31864485 is 58446813.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31864485 - 2⁹ = 31863973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31864489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1062135 + ... + 1062164.

It is an arithmetic number, because the mean of its divisors is an integer number (6372900).

Almost surely, 2^31864485 is an apocalyptic number.

It is an amenable number.

31864485 is a deficient number, since it is larger than the sum of its proper divisors (19118715).

31864485 is a wasteful number, since it uses less digits than its factorization.

31864485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124307.

The product of its digits is 92160, while the sum is 39.

The square root of 31864485 is about 5644.8635944547. The cubic root of 31864485 is about 317.0314165774.

The spelling of 31864485 in words is "thirty-one million, eight hundred sixty-four thousand, four hundred eighty-five".