204240100131 has 16 divisors (see below), whose sum is σ = 302587084800. Its totient is φ = 136155945384.

The previous prime is 204240100121. The next prime is 204240100151. The reversal of 204240100131 is 131001042402.

It is not a de Polignac number, because 204240100131 - 2⁷ = 204240100003 is a prime.

It is a super-2 number, since 2×204240100131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204240100121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986590 + ... + 1175516.

It is an arithmetic number, because the mean of its divisors is an integer number (18911692800).

Almost surely, 2^204240100131 is an apocalyptic number.

204240100131 is a deficient number, since it is larger than the sum of its proper divisors (98346984669).

204240100131 is a wasteful number, since it uses less digits than its factorization.

204240100131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228975 (or 228969 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 204240100131 its reverse (131001042402), we get a palindrome (335241142533).

The spelling of 204240100131 in words is "two hundred four billion, two hundred forty million, one hundred thousand, one hundred thirty-one".