20202323131 has 2 divisors, whose sum is σ = 20202323132. Its totient is φ = 20202323130.

The previous prime is 20202323129. The next prime is 20202323143. The reversal of 20202323131 is 13132320202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20202323131 - 2¹ = 20202323129 is a prime.

It is a super-2 number, since 2×20202323131² (a number of 21 digits) contains 22 as substring.

Together with 20202323129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20202323099 and 20202323108.

It is not a weakly prime, because it can be changed into another prime (20202323431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101161565 + 10101161566.

It is an arithmetic number, because the mean of its divisors is an integer number (10101161566).

Almost surely, 2^20202323131 is an apocalyptic number.

20202323131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202323131 is an equidigital number, since it uses as much as digits as its factorization.

20202323131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20202323131 its reverse (13132320202), we get a palindrome (33334643333).

The spelling of 20202323131 in words is "twenty billion, two hundred two million, three hundred twenty-three thousand, one hundred thirty-one".