204153221530631 has 16 divisors (see below), whose sum is σ = 220789567196160. Its totient is φ = 188109969455520.

The previous prime is 204153221530589. The next prime is 204153221530667. The reversal of 204153221530631 is 136035122351402.

It is a cyclic number.

It is not a de Polignac number, because 204153221530631 - 2³⁰ = 204152147788807 is a prime.

It is a super-3 number, since 3×204153221530631³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204153221530831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52994255 + ... + 56715936.

It is an arithmetic number, because the mean of its divisors is an integer number (13799347949760).

Almost surely, 2^{204153221530631} is an apocalyptic number.

204153221530631 is a deficient number, since it is larger than the sum of its proper divisors (16636345665529).

204153221530631 is a wasteful number, since it uses less digits than its factorization.

204153221530631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109712894.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 204153221530631 in words is "two hundred four trillion, one hundred fifty-three billion, two hundred twenty-one million, five hundred thirty thousand, six hundred thirty-one".