20331210131 has 2 divisors, whose sum is σ = 20331210132. Its totient is φ = 20331210130.

The previous prime is 20331210121. The next prime is 20331210169. The reversal of 20331210131 is 13101213302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20331210131 - 2²² = 20327015827 is a prime.

It is a super-2 number, since 2×20331210131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20331210101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165605065 + 10165605066.

It is an arithmetic number, because the mean of its divisors is an integer number (10165605066).

Almost surely, 2^20331210131 is an apocalyptic number.

20331210131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331210131 is an equidigital number, since it uses as much as digits as its factorization.

20331210131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20331210131 its reverse (13101213302), we get a palindrome (33432423433).

The spelling of 20331210131 in words is "twenty billion, three hundred thirty-one million, two hundred ten thousand, one hundred thirty-one".