654947431 has 2 divisors, whose sum is σ = 654947432. Its totient is φ = 654947430.

The previous prime is 654947417. The next prime is 654947443. The reversal of 654947431 is 134749456.

654947431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654947431 - 2⁵ = 654947399 is a prime.

It is a super-2 number, since 2×654947431² = 857912274746999522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654947401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327473715 + 327473716.

It is an arithmetic number, because the mean of its divisors is an integer number (327473716).

Almost surely, 2^654947431 is an apocalyptic number.

654947431 is a deficient number, since it is larger than the sum of its proper divisors (1).

654947431 is an equidigital number, since it uses as much as digits as its factorization.

654947431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

The square root of 654947431 is about 25591.9407431324. The cubic root of 654947431 is about 868.4313261703.

The spelling of 654947431 in words is "six hundred fifty-four million, nine hundred forty-seven thousand, four hundred thirty-one".