654694231 has 2 divisors, whose sum is σ = 654694232. Its totient is φ = 654694230.

The previous prime is 654694223. The next prime is 654694247. The reversal of 654694231 is 132496456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654694231 - 2³ = 654694223 is a prime.

It is a super-2 number, since 2×654694231² = 857249072209362722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654694211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327347115 + 327347116.

It is an arithmetic number, because the mean of its divisors is an integer number (327347116).

Almost surely, 2^654694231 is an apocalyptic number.

654694231 is a deficient number, since it is larger than the sum of its proper divisors (1).

654694231 is an equidigital number, since it uses as much as digits as its factorization.

654694231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 654694231 is about 25586.9933950826. The cubic root of 654694231 is about 868.3194010787.

The spelling of 654694231 in words is "six hundred fifty-four million, six hundred ninety-four thousand, two hundred thirty-one".