231138553567 has 8 divisors (see below), whose sum is σ = 241198064640. Its totient is φ = 221079876600.

The previous prime is 231138553561. The next prime is 231138553573. The reversal of 231138553567 is 765355831132.

It is an interprime number because it is at equal distance from previous prime (231138553561) and next prime (231138553573).

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 231138553567 - 2¹⁵ = 231138520799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231138553567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231138553561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394942 + ... + 786292.

It is an arithmetic number, because the mean of its divisors is an integer number (30149758080).

Almost surely, 2^231138553567 is an apocalyptic number.

231138553567 is a deficient number, since it is larger than the sum of its proper divisors (10059511073).

231138553567 is a wasteful number, since it uses less digits than its factorization.

231138553567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417053.

The product of its digits is 2268000, while the sum is 49.

The spelling of 231138553567 in words is "two hundred thirty-one billion, one hundred thirty-eight million, five hundred fifty-three thousand, five hundred sixty-seven".