131491773033 has 16 divisors (see below), whose sum is σ = 177146637696. Its totient is φ = 86749217280.

The previous prime is 131491773019. The next prime is 131491773037. The reversal of 131491773033 is 330377194131.

It is not a de Polignac number, because 131491773033 - 2⁹ = 131491772521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131491773037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5372163 + ... + 5396583.

It is an arithmetic number, because the mean of its divisors is an integer number (11071664856).

Almost surely, 2^131491773033 is an apocalyptic number.

It is an amenable number.

131491773033 is a deficient number, since it is larger than the sum of its proper divisors (45654864663).

131491773033 is a wasteful number, since it uses less digits than its factorization.

131491773033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43024.

The product of its (nonzero) digits is 142884, while the sum is 42.

The spelling of 131491773033 in words is "one hundred thirty-one billion, four hundred ninety-one million, seven hundred seventy-three thousand, thirty-three".