231205115451 has 16 divisors (see below), whose sum is σ = 310350700800. Its totient is φ = 153101044320.

The previous prime is 231205115443. The next prime is 231205115503. The reversal of 231205115451 is 154511502132.

It is not a de Polignac number, because 231205115451 - 2³ = 231205115443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231205115851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44676 + ... + 681473.

It is an arithmetic number, because the mean of its divisors is an integer number (19396918800).

Almost surely, 2^231205115451 is an apocalyptic number.

231205115451 is a deficient number, since it is larger than the sum of its proper divisors (79145585349).

231205115451 is a wasteful number, since it uses less digits than its factorization.

231205115451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726866.

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 231205115451 its reverse (154511502132), we get a palindrome (385716617583).

The spelling of 231205115451 in words is "two hundred thirty-one billion, two hundred five million, one hundred fifteen thousand, four hundred fifty-one".