231515442452431 has 8 divisors (see below), whose sum is σ = 235311500974544. Its totient is φ = 227719407265920.

The previous prime is 231515442452429. The next prime is 231515442452453. The reversal of 231515442452431 is 134254244515132.

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 231515442452431 - 2¹ = 231515442452429 is a prime.

It is a super-2 number, since 2×231515442452431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231515442452401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14762296 + ... + 26095138.

It is an arithmetic number, because the mean of its divisors is an integer number (29413937621818).

Almost surely, 2^{231515442452431} is an apocalyptic number.

231515442452431 is a deficient number, since it is larger than the sum of its proper divisors (3796058522113).

231515442452431 is a wasteful number, since it uses less digits than its factorization.

231515442452431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11667801.

The product of its digits is 2304000, while the sum is 46.

Adding to 231515442452431 its reverse (134254244515132), we get a palindrome (365769686967563).

The spelling of 231515442452431 in words is "two hundred thirty-one trillion, five hundred fifteen billion, four hundred forty-two million, four hundred fifty-two thousand, four hundred thirty-one".