131311001 has 2 divisors, whose sum is σ = 131311002. Its totient is φ = 131311000.

The previous prime is 131310989. The next prime is 131311027. The reversal of 131311001 is 100113131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106110601 + 25200400 = 10301^2 + 5020^2 .

It is a cyclic number.

It is not a de Polignac number, because 131311001 - 2²² = 127116697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131311031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65655500 + 65655501.

It is an arithmetic number, because the mean of its divisors is an integer number (65655501).

Almost surely, 2^131311001 is an apocalyptic number.

It is an amenable number.

131311001 is a deficient number, since it is larger than the sum of its proper divisors (1).

131311001 is an equidigital number, since it uses as much as digits as its factorization.

131311001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 131311001 is about 11459.1012300267. The cubic root of 131311001 is about 508.2768978883.

Adding to 131311001 its reverse (100113131), we get a palindrome (231424132).

It can be divided in two parts, 13131 and 1001, that multiplied together give a palindrome (13144131).

The spelling of 131311001 in words is "one hundred thirty-one million, three hundred eleven thousand, one".