102101311231 has 2 divisors, whose sum is σ = 102101311232. Its totient is φ = 102101311230.

The previous prime is 102101311229. The next prime is 102101311243. The reversal of 102101311231 is 132113101201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102101311231 - 2¹ = 102101311229 is a prime.

It is a super-2 number, since 2×102101311231² (a number of 23 digits) contains 22 as substring.

Together with 102101311229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102101311031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050655615 + 51050655616.

It is an arithmetic number, because the mean of its divisors is an integer number (51050655616).

Almost surely, 2^102101311231 is an apocalyptic number.

102101311231 is a deficient number, since it is larger than the sum of its proper divisors (1).

102101311231 is an equidigital number, since it uses as much as digits as its factorization.

102101311231 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 16.

Adding to 102101311231 its reverse (132113101201), we get a palindrome (234214412432).

The spelling of 102101311231 in words is "one hundred two billion, one hundred one million, three hundred eleven thousand, two hundred thirty-one".