204040450031 has 12 divisors (see below), whose sum is σ = 231510576192. Its totient is φ = 179507724000.

The previous prime is 204040449959. The next prime is 204040450043. The reversal of 204040450031 is 130054040402.

It is not a de Polignac number, because 204040450031 - 2¹⁸ = 204040187887 is a prime.

It is a super-2 number, since 2×204040450031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204040449979 and 204040450006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204040450331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27194390 + ... + 27201891.

It is an arithmetic number, because the mean of its divisors is an integer number (19292548016).

Almost surely, 2^204040450031 is an apocalyptic number.

204040450031 is a deficient number, since it is larger than the sum of its proper divisors (27470126161).

204040450031 is a wasteful number, since it uses less digits than its factorization.

204040450031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54396334 (or 54396323 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 204040450031 its reverse (130054040402), we get a palindrome (334094490433).

The spelling of 204040450031 in words is "two hundred four billion, forty million, four hundred fifty thousand, thirty-one".