131911503131 has 4 divisors (see below), whose sum is σ = 132950176512. Its totient is φ = 130872829752.

The previous prime is 131911503121. The next prime is 131911503133. The reversal of 131911503131 is 131305119131.

It is a happy number.

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 131911503131 - 2¹⁴ = 131911486747 is a prime.

It is a super-2 number, since 2×131911503131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131911503094 and 131911503103.

It is not an unprimeable number, because it can be changed into a prime (131911503133) 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, 519336500 + ... + 519336753.

It is an arithmetic number, because the mean of its divisors is an integer number (33237544128).

Almost surely, 2^131911503131 is an apocalyptic number.

131911503131 is a deficient number, since it is larger than the sum of its proper divisors (1038673381).

131911503131 is a wasteful number, since it uses less digits than its factorization.

131911503131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038673380.

The product of its (nonzero) digits is 1215, while the sum is 29.

The spelling of 131911503131 in words is "one hundred thirty-one billion, nine hundred eleven million, five hundred three thousand, one hundred thirty-one".