102011013331231 has 4 divisors (see below), whose sum is σ = 102011187301264. Its totient is φ = 102010839361200.

The previous prime is 102011013331207. The next prime is 102011013331387. The reversal of 102011013331231 is 132133310110201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102011013331231 - 2²¹ = 102011011234079 is a prime.

It is a super-2 number, since 2×102011013331231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011013331831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86102475 + ... + 87279196.

It is an arithmetic number, because the mean of its divisors is an integer number (25502796825316).

Almost surely, 2^{102011013331231} is an apocalyptic number.

102011013331231 is a deficient number, since it is larger than the sum of its proper divisors (173970033).

102011013331231 is an equidigital number, since it uses as much as digits as its factorization.

102011013331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173970032.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 102011013331231 its reverse (132133310110201), we get a palindrome (234144323441432).

The spelling of 102011013331231 in words is "one hundred two trillion, eleven billion, thirteen million, three hundred thirty-one thousand, two hundred thirty-one".