204951295831 has 4 divisors (see below), whose sum is σ = 205311492000. Its totient is φ = 204591099664.

The previous prime is 204951295823. The next prime is 204951295841. The reversal of 204951295831 is 138592159402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204951295831 - 2³ = 204951295823 is a prime.

It is a super-2 number, since 2×204951295831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204951295841) 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, 180097231 + ... + 180098368.

It is an arithmetic number, because the mean of its divisors is an integer number (51327873000).

Almost surely, 2^204951295831 is an apocalyptic number.

204951295831 is a deficient number, since it is larger than the sum of its proper divisors (360196169).

204951295831 is an equidigital number, since it uses as much as digits as its factorization.

204951295831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360196168.

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 204951295831 in words is "two hundred four billion, nine hundred fifty-one million, two hundred ninety-five thousand, eight hundred thirty-one".