12353211531 has 32 divisors (see below), whose sum is σ = 18439295040. Its totient is φ = 8173440000.

The previous prime is 12353211523. The next prime is 12353211587. The reversal of 12353211531 is 13511235321.

12353211531 is a `hidden beast` number, since 12 + 3 + 532 + 115 + 3 + 1 = 666.

It is not a de Polignac number, because 12353211531 - 2³ = 12353211523 is a prime.

It is a super-2 number, since 2×12353211531² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12353211495 and 12353211504.

It is not an unprimeable number, because it can be changed into a prime (12353211511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3085531 + ... + 3089531.

It is an arithmetic number, because the mean of its divisors is an integer number (576227970).

Almost surely, 2^12353211531 is an apocalyptic number.

12353211531 is a deficient number, since it is larger than the sum of its proper divisors (6086083509).

12353211531 is a wasteful number, since it uses less digits than its factorization.

12353211531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844 (or 4838 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

Adding to 12353211531 its reverse (13511235321), we get a palindrome (25864446852).

The spelling of 12353211531 in words is "twelve billion, three hundred fifty-three million, two hundred eleven thousand, five hundred thirty-one".