201604731 has 8 divisors (see below), whose sum is σ = 269251584. Its totient is φ = 134180520.

The previous prime is 201604727. The next prime is 201604747. The reversal of 201604731 is 137406102.

201604731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 201604731 - 2² = 201604727 is a prime.

It is a super-2 number, since 2×201604731² = 81288935123164722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201604721) 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, 53535 + ... + 57176.

It is an arithmetic number, because the mean of its divisors is an integer number (33656448).

Almost surely, 2^201604731 is an apocalyptic number.

201604731 is a deficient number, since it is larger than the sum of its proper divisors (67646853).

201604731 is a wasteful number, since it uses less digits than its factorization.

201604731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111321.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 201604731 is about 14198.7580794941. The cubic root of 201604731 is about 586.3634702612.

The spelling of 201604731 in words is "two hundred one million, six hundred four thousand, seven hundred thirty-one".