131330051533 has 4 divisors (see below), whose sum is σ = 139055348700. Its totient is φ = 123604754368.

The previous prime is 131330051521. The next prime is 131330051539. The reversal of 131330051533 is 335150033131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 335150033131 = 43 ⋅7794186817.

It can be written as a sum of positive squares in 2 ways, for example, as 89337025449 + 41993026084 = 298893^2 + 204922^2 .

It is a de Polignac number, because none of the positive numbers 2^k-131330051533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131330051539) 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, 3862648558 + ... + 3862648591.

It is an arithmetic number, because the mean of its divisors is an integer number (34763837175).

Almost surely, 2^131330051533 is an apocalyptic number.

It is an amenable number.

131330051533 is a deficient number, since it is larger than the sum of its proper divisors (7725297167).

131330051533 is an equidigital number, since it uses as much as digits as its factorization.

131330051533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7725297166.

The product of its (nonzero) digits is 6075, while the sum is 28.

Adding to 131330051533 its reverse (335150033131), we get a palindrome (466480084664).

The spelling of 131330051533 in words is "one hundred thirty-one billion, three hundred thirty million, fifty-one thousand, five hundred thirty-three".