653132631 has 4 divisors (see below), whose sum is σ = 870843512. Its totient is φ = 435421752.

The previous prime is 653132573. The next prime is 653132647. The reversal of 653132631 is 136231356.

It is a happy number.

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

It is not a de Polignac number, because 653132631 - 2¹⁸ = 652870487 is a prime.

It is a super-2 number, since 2×653132631² = 853164467353964322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653132671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108855436 + ... + 108855441.

It is an arithmetic number, because the mean of its divisors is an integer number (217710878).

Almost surely, 2^653132631 is an apocalyptic number.

653132631 is a deficient number, since it is larger than the sum of its proper divisors (217710881).

653132631 is a wasteful number, since it uses less digits than its factorization.

653132631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217710880.

The product of its digits is 9720, while the sum is 30.

The square root of 653132631 is about 25556.4596726542. The cubic root of 653132631 is about 867.6284693205.

Adding to 653132631 its reverse (136231356), we get a palindrome (789363987).

The spelling of 653132631 in words is "six hundred fifty-three million, one hundred thirty-two thousand, six hundred thirty-one".