131031133 has 2 divisors, whose sum is σ = 131031134. Its totient is φ = 131031132.

The previous prime is 131031127. The next prime is 131031137. The reversal of 131031133 is 331130131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77404804 + 53626329 = 8798^2 + 7323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131031133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131031137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515566 + 65515567.

It is an arithmetic number, because the mean of its divisors is an integer number (65515567).

Almost surely, 2^131031133 is an apocalyptic number.

It is an amenable number.

131031133 is a deficient number, since it is larger than the sum of its proper divisors (1).

131031133 is an equidigital number, since it uses as much as digits as its factorization.

131031133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 131031133 is about 11446.8831128827. The cubic root of 131031133 is about 507.9155379139.

Adding to 131031133 its reverse (331130131), we get a palindrome (462161264).

The spelling of 131031133 in words is "one hundred thirty-one million, thirty-one thousand, one hundred thirty-three".