20412232131 has 16 divisors (see below), whose sum is σ = 28211834880. Its totient is φ = 13114066560.

The previous prime is 20412232123. The next prime is 20412232153. The reversal of 20412232131 is 13123221402.

It is not a de Polignac number, because 20412232131 - 2³ = 20412232123 is a prime.

It is a super-2 number, since 2×20412232131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20412232098 and 20412232107.

It is not an unprimeable number, because it can be changed into a prime (20412232111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436950 + ... + 481403.

It is an arithmetic number, because the mean of its divisors is an integer number (1763239680).

Almost surely, 2^20412232131 is an apocalyptic number.

20412232131 is a deficient number, since it is larger than the sum of its proper divisors (7799602749).

20412232131 is a wasteful number, since it uses less digits than its factorization.

20412232131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918626.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20412232131 its reverse (13123221402), we get a palindrome (33535453533).

The spelling of 20412232131 in words is "twenty billion, four hundred twelve million, two hundred thirty-two thousand, one hundred thirty-one".