653123312531 has 8 divisors (see below), whose sum is σ = 671434133328. Its totient is φ = 634925872000.

The previous prime is 653123312521. The next prime is 653123312561. The reversal of 653123312531 is 135213321356.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-653123312531 is a prime.

It is a super-2 number, since 2×653123312531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 653123312491 and 653123312500.

It is not an unprimeable number, because it can be changed into a prime (653123312521) 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 7 ways as a sum of consecutive naturals, for example, 28333385 + ... + 28356426.

It is an arithmetic number, because the mean of its divisors is an integer number (83929266666).

Almost surely, 2^653123312531 is an apocalyptic number.

653123312531 is a deficient number, since it is larger than the sum of its proper divisors (18310820797).

653123312531 is a wasteful number, since it uses less digits than its factorization.

653123312531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56690133.

The product of its digits is 48600, while the sum is 35.

Adding to 653123312531 its reverse (135213321356), we get a palindrome (788336633887).

The spelling of 653123312531 in words is "six hundred fifty-three billion, one hundred twenty-three million, three hundred twelve thousand, five hundred thirty-one".