231454441333551 has 16 divisors (see below), whose sum is σ = 310829130662400. Its totient is φ = 153191378035968.

The previous prime is 231454441333499. The next prime is 231454441333571. The reversal of 231454441333551 is 155333144454132.

It is not a de Polignac number, because 231454441333551 - 2¹⁴ = 231454441317167 is a prime.

It is a super-2 number, since 2×231454441333551² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231454441333551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231454441333571) 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, 41088415 + ... + 46380671.

It is an arithmetic number, because the mean of its divisors is an integer number (19426820666400).

Almost surely, 2^{231454441333551} is an apocalyptic number.

231454441333551 is a deficient number, since it is larger than the sum of its proper divisors (79374689328849).

231454441333551 is a wasteful number, since it uses less digits than its factorization.

231454441333551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397278.

The product of its digits is 5184000, while the sum is 48.

Adding to 231454441333551 its reverse (155333144454132), we get a palindrome (386787585787683).

The spelling of 231454441333551 in words is "two hundred thirty-one trillion, four hundred fifty-four billion, four hundred forty-one million, three hundred thirty-three thousand, five hundred fifty-one".