654311231 has 4 divisors (see below), whose sum is σ = 747784272. Its totient is φ = 560838192.

The previous prime is 654311209. The next prime is 654311233. The reversal of 654311231 is 132113456.

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 654311231 - 2⁶ = 654311167 is a prime.

It is a super-2 number, since 2×654311231² = 856246374025470722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 654311231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654311233) 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, 46736510 + ... + 46736523.

It is an arithmetic number, because the mean of its divisors is an integer number (186946068).

Almost surely, 2^654311231 is an apocalyptic number.

654311231 is a deficient number, since it is larger than the sum of its proper divisors (93473041).

654311231 is an equidigital number, since it uses as much as digits as its factorization.

654311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93473040.

The product of its digits is 2160, while the sum is 26.

The square root of 654311231 is about 25579.5080288891. The cubic root of 654311231 is about 868.1500440532.

Adding to 654311231 its reverse (132113456), we get a palindrome (786424687).

The spelling of 654311231 in words is "six hundred fifty-four million, three hundred eleven thousand, two hundred thirty-one".