20332231002131 has 2 divisors, whose sum is σ = 20332231002132. Its totient is φ = 20332231002130.

The previous prime is 20332231002107. The next prime is 20332231002253. The reversal of 20332231002131 is 13120013223302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20332231002131 is a prime.

It is a super-2 number, since 2×20332231002131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20332231002097 and 20332231002106.

It is not a weakly prime, because it can be changed into another prime (20332231002931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166115501065 + 10166115501066.

It is an arithmetic number, because the mean of its divisors is an integer number (10166115501066).

Almost surely, 2^{20332231002131} is an apocalyptic number.

20332231002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332231002131 is an equidigital number, since it uses as much as digits as its factorization.

20332231002131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20332231002131 its reverse (13120013223302), we get a palindrome (33452244225433).

The spelling of 20332231002131 in words is "twenty trillion, three hundred thirty-two billion, two hundred thirty-one million, two thousand, one hundred thirty-one".