654291431 has 2 divisors, whose sum is σ = 654291432. Its totient is φ = 654291430.

The previous prime is 654291409. The next prime is 654291439. The reversal of 654291431 is 134192456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654291431 - 2²² = 650097127 is a prime.

It is a super-2 number, since 2×654291431² = 856194553360055522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 654291391 and 654291400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654291439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327145715 + 327145716.

It is an arithmetic number, because the mean of its divisors is an integer number (327145716).

Almost surely, 2^654291431 is an apocalyptic number.

654291431 is a deficient number, since it is larger than the sum of its proper divisors (1).

654291431 is an equidigital number, since it uses as much as digits as its factorization.

654291431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 654291431 is about 25579.1209974072. The cubic root of 654291431 is about 868.1412869850.

The spelling of 654291431 in words is "six hundred fifty-four million, two hundred ninety-one thousand, four hundred thirty-one".