654947131 has 2 divisors, whose sum is σ = 654947132. Its totient is φ = 654947130.

The previous prime is 654947089. The next prime is 654947221. The reversal of 654947131 is 131749456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654947131 - 2¹³ = 654938939 is a prime.

It is a super-2 number, since 2×654947131² = 857911488810262322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (654947431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327473565 + 327473566.

It is an arithmetic number, because the mean of its divisors is an integer number (327473566).

Almost surely, 2^654947131 is an apocalyptic number.

654947131 is a deficient number, since it is larger than the sum of its proper divisors (1).

654947131 is an equidigital number, since it uses as much as digits as its factorization.

654947131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 654947131 is about 25591.9348819115. The cubic root of 654947131 is about 868.4311935747.

The spelling of 654947131 in words is "six hundred fifty-four million, nine hundred forty-seven thousand, one hundred thirty-one".