210000023131 has 2 divisors, whose sum is σ = 210000023132. Its totient is φ = 210000023130.

The previous prime is 210000023119. The next prime is 210000023159. The reversal of 210000023131 is 131320000012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210000023131 - 2¹¹ = 210000021083 is a prime.

It is a super-2 number, since 2×210000023131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210000063131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000011565 + 105000011566.

It is an arithmetic number, because the mean of its divisors is an integer number (105000011566).

Almost surely, 2^210000023131 is an apocalyptic number.

210000023131 is a deficient number, since it is larger than the sum of its proper divisors (1).

210000023131 is an equidigital number, since it uses as much as digits as its factorization.

210000023131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 210000023131 its reverse (131320000012), we get a palindrome (341320023143).

The spelling of 210000023131 in words is "two hundred ten billion, twenty-three thousand, one hundred thirty-one".