204231242613 has 4 divisors (see below), whose sum is σ = 272308323488. Its totient is φ = 136154161740.

The previous prime is 204231242597. The next prime is 204231242629. The reversal of 204231242613 is 316242132402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (204231242597) and next prime (204231242629).

It is not a de Polignac number, because 204231242613 - 2⁴ = 204231242597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204231246613) 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, 34038540433 + ... + 34038540438.

It is an arithmetic number, because the mean of its divisors is an integer number (68077080872).

Almost surely, 2^204231242613 is an apocalyptic number.

It is an amenable number.

204231242613 is a deficient number, since it is larger than the sum of its proper divisors (68077080875).

204231242613 is an equidigital number, since it uses as much as digits as its factorization.

204231242613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68077080874.

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 204231242613 in words is "two hundred four billion, two hundred thirty-one million, two hundred forty-two thousand, six hundred thirteen".