1232521131 has 24 divisors (see below), whose sum is σ = 1788346224. Its totient is φ = 754462720.

The previous prime is 1232521111. The next prime is 1232521139. The reversal of 1232521131 is 1311252321.

It is not a de Polignac number, because 1232521131 - 2⁵ = 1232521099 is a prime.

It is a super-2 number, since 2×1232521131² = 3038216676723038322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1232521098 and 1232521107.

It is not an unprimeable number, because it can be changed into a prime (1232521139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18211 + ... + 52883.

It is an arithmetic number, because the mean of its divisors is an integer number (74514426).

Almost surely, 2^1232521131 is an apocalyptic number.

1232521131 is a deficient number, since it is larger than the sum of its proper divisors (555825093).

1232521131 is a wasteful number, since it uses less digits than its factorization.

1232521131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34751 (or 34734 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 1232521131 is about 35107.2803133481. The cubic root of 1232521131 is about 1072.1728144926.

Adding to 1232521131 its reverse (1311252321), we get a palindrome (2543773452).

The spelling of 1232521131 in words is "one billion, two hundred thirty-two million, five hundred twenty-one thousand, one hundred thirty-one".