131321031133 has 4 divisors (see below), whose sum is σ = 131322299968. Its totient is φ = 131319762300.

The previous prime is 131321031131. The next prime is 131321031169. The reversal of 131321031133 is 331130123131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331130123131 = 8111 ⋅40824821.

It is a cyclic number.

It is not a de Polignac number, because 131321031133 - 2¹ = 131321031131 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 (131321031131) 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, 463893 + ... + 691258.

It is an arithmetic number, because the mean of its divisors is an integer number (32830574992).

Almost surely, 2^131321031133 is an apocalyptic number.

It is an amenable number.

131321031133 is a deficient number, since it is larger than the sum of its proper divisors (1268835).

131321031133 is a wasteful number, since it uses less digits than its factorization.

131321031133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268834.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 131321031133 its reverse (331130123131), we get a palindrome (462451154264).

The spelling of 131321031133 in words is "one hundred thirty-one billion, three hundred twenty-one million, thirty-one thousand, one hundred thirty-three".