131211263113 has 4 divisors (see below), whose sum is σ = 149955729280. Its totient is φ = 112466796948.

The previous prime is 131211263063. The next prime is 131211263129. The reversal of 131211263113 is 311362112131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131211263113 - 2⁹ = 131211262601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131211263143) 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, 9372233073 + ... + 9372233086.

It is an arithmetic number, because the mean of its divisors is an integer number (37488932320).

Almost surely, 2^131211263113 is an apocalyptic number.

It is an amenable number.

131211263113 is a deficient number, since it is larger than the sum of its proper divisors (18744466167).

131211263113 is an equidigital number, since it uses as much as digits as its factorization.

131211263113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18744466166.

The product of its digits is 648, while the sum is 25.

Adding to 131211263113 its reverse (311362112131), we get a palindrome (442573375244).

The spelling of 131211263113 in words is "one hundred thirty-one billion, two hundred eleven million, two hundred sixty-three thousand, one hundred thirteen".