204003123031 has 4 divisors (see below), whose sum is σ = 204012040032. Its totient is φ = 203994206032.

The previous prime is 204003123011. The next prime is 204003123041. The reversal of 204003123031 is 130321300402.

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 204003123031 - 2⁷ = 204003122903 is a prime.

It is a super-2 number, since 2×204003123031² (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 (204003123011) 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, 4424095 + ... + 4469968.

It is an arithmetic number, because the mean of its divisors is an integer number (51003010008).

Almost surely, 2^204003123031 is an apocalyptic number.

204003123031 is a deficient number, since it is larger than the sum of its proper divisors (8917001).

204003123031 is an equidigital number, since it uses as much as digits as its factorization.

204003123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8917000.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 204003123031 its reverse (130321300402), we get a palindrome (334324423433).

The spelling of 204003123031 in words is "two hundred four billion, three million, one hundred twenty-three thousand, thirty-one".