654633131 has 2 divisors, whose sum is σ = 654633132. Its totient is φ = 654633130.

The previous prime is 654633097. The next prime is 654633137. The reversal of 654633131 is 131336456.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654633131 is a prime.

It is a super-2 number, since 2×654633131² = 857089072405726322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (654633137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327316565 + 327316566.

It is an arithmetic number, because the mean of its divisors is an integer number (327316566).

Almost surely, 2^654633131 is an apocalyptic number.

654633131 is a deficient number, since it is larger than the sum of its proper divisors (1).

654633131 is an equidigital number, since it uses as much as digits as its factorization.

654633131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 32.

The square root of 654633131 is about 25585.7994012304. The cubic root of 654633131 is about 868.2923879768.

Adding to 654633131 its reverse (131336456), we get a palindrome (785969587).

The spelling of 654633131 in words is "six hundred fifty-four million, six hundred thirty-three thousand, one hundred thirty-one".