231322415551 has 8 divisors (see below), whose sum is σ = 239400907200. Its totient is φ = 223250714400.

The previous prime is 231322415539. The next prime is 231322415573. The reversal of 231322415551 is 155514223132.

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 231322415551 - 2¹¹ = 231322413503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231322415501) 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, 1628256 + ... + 1764613.

It is an arithmetic number, because the mean of its divisors is an integer number (29925113400).

Almost surely, 2^231322415551 is an apocalyptic number.

231322415551 is a deficient number, since it is larger than the sum of its proper divisors (8078491649).

231322415551 is a wasteful number, since it uses less digits than its factorization.

231322415551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395249.

The product of its digits is 36000, while the sum is 34.

Adding to 231322415551 its reverse (155514223132), we get a palindrome (386836638683).

The spelling of 231322415551 in words is "two hundred thirty-one billion, three hundred twenty-two million, four hundred fifteen thousand, five hundred fifty-one".