231254154551 has 4 divisors (see below), whose sum is σ = 264290462352. Its totient is φ = 198217846752.

The previous prime is 231254154479. The next prime is 231254154577. The reversal of 231254154551 is 155451452132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231254154551 - 2¹⁸ = 231253892407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231254154751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16518153890 + ... + 16518153903.

It is an arithmetic number, because the mean of its divisors is an integer number (66072615588).

Almost surely, 2^231254154551 is an apocalyptic number.

231254154551 is a deficient number, since it is larger than the sum of its proper divisors (33036307801).

231254154551 is an equidigital number, since it uses as much as digits as its factorization.

231254154551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33036307800.

The product of its digits is 120000, while the sum is 38.

The spelling of 231254154551 in words is "two hundred thirty-one billion, two hundred fifty-four million, one hundred fifty-four thousand, five hundred fifty-one".