131025201331 has 4 divisors (see below), whose sum is σ = 131026238200. Its totient is φ = 131024164464.

The previous prime is 131025201323. The next prime is 131025201367. The reversal of 131025201331 is 133102520131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 131025201331 - 2³ = 131025201323 is a prime.

It is a super-2 number, since 2×131025201331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131025201301) 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, 297501 + ... + 592078.

It is an arithmetic number, because the mean of its divisors is an integer number (32756559550).

Almost surely, 2^131025201331 is an apocalyptic number.

131025201331 is a deficient number, since it is larger than the sum of its proper divisors (1036869).

131025201331 is an equidigital number, since it uses as much as digits as its factorization.

131025201331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036868.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 131025201331 its reverse (133102520131), we get a palindrome (264127721462).

The spelling of 131025201331 in words is "one hundred thirty-one billion, twenty-five million, two hundred one thousand, three hundred thirty-one".