131033403331 has 4 divisors (see below), whose sum is σ = 131110077600. Its totient is φ = 130956729064.

The previous prime is 131033403323. The next prime is 131033403337. The reversal of 131033403331 is 133304330131.

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 131033403331 - 2³ = 131033403323 is a prime.

It is a super-2 number, since 2×131033403331² (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 = 131033403296 and 131033403305.

It is not an unprimeable number, because it can be changed into a prime (131033403337) 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, 38334571 + ... + 38337988.

It is an arithmetic number, because the mean of its divisors is an integer number (32777519400).

Almost surely, 2^131033403331 is an apocalyptic number.

131033403331 is a deficient number, since it is larger than the sum of its proper divisors (76674269).

131033403331 is an equidigital number, since it uses as much as digits as its factorization.

131033403331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76674268.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 131033403331 its reverse (133304330131), we get a palindrome (264337733462).

The spelling of 131033403331 in words is "one hundred thirty-one billion, thirty-three million, four hundred three thousand, three hundred thirty-one".