204156313 has 4 divisors (see below), whose sum is σ = 204184960. Its totient is φ = 204127668.

The previous prime is 204156307. The next prime is 204156319. The reversal of 204156313 is 313651402.

204156313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 313651402 = 2 ⋅156825701.

It is an interprime number because it is at equal distance from previous prime (204156307) and next prime (204156319).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204156313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204156319) 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, 5668 + ... + 20986.

It is an arithmetic number, because the mean of its divisors is an integer number (51046240).

Almost surely, 2^204156313 is an apocalyptic number.

It is an amenable number.

204156313 is a deficient number, since it is larger than the sum of its proper divisors (28647).

204156313 is a wasteful number, since it uses less digits than its factorization.

204156313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28646.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 204156313 is about 14288.3278587804. The cubic root of 204156313 is about 588.8268491755.

The spelling of 204156313 in words is "two hundred four million, one hundred fifty-six thousand, three hundred thirteen".