653232521231 has 8 divisors (see below), whose sum is σ = 659103136560. Its totient is φ = 647387711488.

The previous prime is 653232521219. The next prime is 653232521251. The reversal of 653232521231 is 132125232356.

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-653232521231 is a prime.

It is a super-2 number, since 2×653232521231² (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 = 653232521191 and 653232521200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653232521251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6400541 + ... + 6501798.

It is an arithmetic number, because the mean of its divisors is an integer number (82387892070).

Almost surely, 2^653232521231 is an apocalyptic number.

653232521231 is a deficient number, since it is larger than the sum of its proper divisors (5870615329).

653232521231 is a wasteful number, since it uses less digits than its factorization.

653232521231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12902793.

The product of its digits is 64800, while the sum is 35.

Adding to 653232521231 its reverse (132125232356), we get a palindrome (785357753587).

It can be divided in two parts, 6532325 and 21231, that added together give a palindrome (6553556).

The spelling of 653232521231 in words is "six hundred fifty-three billion, two hundred thirty-two million, five hundred twenty-one thousand, two hundred thirty-one".