231390645205 has 8 divisors (see below), whose sum is σ = 289741329792. Its totient is φ = 177064145808.

The previous prime is 231390645179. The next prime is 231390645221. The reversal of 231390645205 is 502546093132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231390645205 - 2¹³ = 231390637013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006046169 + ... + 1006046398.

It is an arithmetic number, because the mean of its divisors is an integer number (36217666224).

Almost surely, 2^231390645205 is an apocalyptic number.

It is an amenable number.

231390645205 is a deficient number, since it is larger than the sum of its proper divisors (58350684587).

231390645205 is a wasteful number, since it uses less digits than its factorization.

231390645205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012092595.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 231390645205 in words is "two hundred thirty-one billion, three hundred ninety million, six hundred forty-five thousand, two hundred five".