204125451031 has 4 divisors (see below), whose sum is σ = 204126662200. Its totient is φ = 204124239864.

The previous prime is 204125450999. The next prime is 204125451043. The reversal of 204125451031 is 130154521402.

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 204125451031 - 2⁵ = 204125450999 is a prime.

It is a super-2 number, since 2×204125451031² (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 (204125451091) 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, 302076 + ... + 706753.

It is an arithmetic number, because the mean of its divisors is an integer number (51031665550).

Almost surely, 2^204125451031 is an apocalyptic number.

204125451031 is a deficient number, since it is larger than the sum of its proper divisors (1211169).

204125451031 is a wasteful number, since it uses less digits than its factorization.

204125451031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211168.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 204125451031 its reverse (130154521402), we get a palindrome (334279972433).

The spelling of 204125451031 in words is "two hundred four billion, one hundred twenty-five million, four hundred fifty-one thousand, thirty-one".