654131 has 4 divisors (see below), whose sum is σ = 675264. Its totient is φ = 633000.

The previous prime is 654127. The next prime is 654149. The reversal of 654131 is 131456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 654131 - 2² = 654127 is a prime.

It is a super-2 number, since 2×654131² = 855774730322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10520 + ... + 10581.

It is an arithmetic number, because the mean of its divisors is an integer number (168816).

2⁶⁵⁴¹³¹ is an apocalyptic number.

654131 is a deficient number, since it is larger than the sum of its proper divisors (21133).

654131 is a wasteful number, since it uses less digits than its factorization.

654131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21132.

The product of its digits is 360, while the sum is 20.

The square root of 654131 is about 808.7836546321. The cubic root of 654131 is about 86.8070325660.

Adding to 654131 its reverse (131456), we get a palindrome (785587).

The spelling of 654131 in words is "six hundred fifty-four thousand, one hundred thirty-one".