131231011102 has 4 divisors (see below), whose sum is σ = 196846516656. Its totient is φ = 65615505550.

The previous prime is 131231011073. The next prime is 131231011181. The reversal of 131231011102 is 201110132131.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32807752774 + ... + 32807752777.

It is an arithmetic number, because the mean of its divisors is an integer number (49211629164).

Almost surely, 2^131231011102 is an apocalyptic number.

131231011102 is a deficient number, since it is larger than the sum of its proper divisors (65615505554).

131231011102 is an equidigital number, since it uses as much as digits as its factorization.

131231011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65615505553.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 131231011102 its reverse (201110132131), we get a palindrome (332341143233).

The spelling of 131231011102 in words is "one hundred thirty-one billion, two hundred thirty-one million, eleven thousand, one hundred two".