131442774511 has 4 divisors (see below), whose sum is σ = 131615499024. Its totient is φ = 131270050000.

The previous prime is 131442774481. The next prime is 131442774527. The reversal of 131442774511 is 115477244131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131442774511 - 2¹⁷ = 131442643439 is a prime.

It is a super-2 number, since 2×131442774511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131440774511) 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, 86361115 + ... + 86362636.

It is an arithmetic number, because the mean of its divisors is an integer number (32903874756).

Almost surely, 2^131442774511 is an apocalyptic number.

131442774511 is a deficient number, since it is larger than the sum of its proper divisors (172724513).

131442774511 is an equidigital number, since it uses as much as digits as its factorization.

131442774511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172724512.

The product of its digits is 94080, while the sum is 40.

The spelling of 131442774511 in words is "one hundred thirty-one billion, four hundred forty-two million, seven hundred seventy-four thousand, five hundred eleven".