653231031 has 4 divisors (see below), whose sum is σ = 870974712. Its totient is φ = 435487352.

The previous prime is 653231023. The next prime is 653231053. The reversal of 653231031 is 130132356.

It is a happy number.

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 653231031 - 2³ = 653231023 is a prime.

It is a super-2 number, since 2×653231031² = 853421559722645922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 653230992 and 653231010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653231011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108871836 + ... + 108871841.

It is an arithmetic number, because the mean of its divisors is an integer number (217743678).

Almost surely, 2^653231031 is an apocalyptic number.

653231031 is a deficient number, since it is larger than the sum of its proper divisors (217743681).

653231031 is a wasteful number, since it uses less digits than its factorization.

653231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217743680.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 653231031 is about 25558.3847494320. The cubic root of 653231031 is about 867.6720390082.

Adding to 653231031 its reverse (130132356), we get a palindrome (783363387).

The spelling of 653231031 in words is "six hundred fifty-three million, two hundred thirty-one thousand, thirty-one".