100020113231 has 2 divisors, whose sum is σ = 100020113232. Its totient is φ = 100020113230.

The previous prime is 100020113197. The next prime is 100020113239. The reversal of 100020113231 is 132311020001.

It is a strong prime.

It is an emirp because it is prime and its reverse (132311020001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100020113231 - 2¹⁰ = 100020112207 is a prime.

It is a super-2 number, since 2×100020113231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100020113239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010056615 + 50010056616.

It is an arithmetic number, because the mean of its divisors is an integer number (50010056616).

Almost surely, 2^100020113231 is an apocalyptic number.

100020113231 is a deficient number, since it is larger than the sum of its proper divisors (1).

100020113231 is an equidigital number, since it uses as much as digits as its factorization.

100020113231 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 14.

Adding to 100020113231 its reverse (132311020001), we get a palindrome (232331133232).

The spelling of 100020113231 in words is "one hundred billion, twenty million, one hundred thirteen thousand, two hundred thirty-one".