654313531 has 2 divisors, whose sum is σ = 654313532. Its totient is φ = 654313530.

The previous prime is 654313529. The next prime is 654313549. The reversal of 654313531 is 135313456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654313531 - 2¹ = 654313529 is a prime.

It is a super-2 number, since 2×654313531² = 856252393699375922, which contains 22 as substring.

Together with 654313529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 654313493 and 654313502.

It is not a weakly prime, because it can be changed into another prime (654313031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327156765 + 327156766.

It is an arithmetic number, because the mean of its divisors is an integer number (327156766).

Almost surely, 2^654313531 is an apocalyptic number.

654313531 is a deficient number, since it is larger than the sum of its proper divisors (1).

654313531 is an equidigital number, since it uses as much as digits as its factorization.

654313531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 31.

The square root of 654313531 is about 25579.5529867119. The cubic root of 654313531 is about 868.1510612769.

Adding to 654313531 its reverse (135313456), we get a palindrome (789626987).

The spelling of 654313531 in words is "six hundred fifty-four million, three hundred thirteen thousand, five hundred thirty-one".