131440714521 has 4 divisors (see below), whose sum is σ = 175254286032. Its totient is φ = 87627143012.

The previous prime is 131440714511. The next prime is 131440714607. The reversal of 131440714521 is 125417044131.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 131440714521 - 2²² = 131436520217 is a prime.

It is a super-2 number, since 2×131440714521² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131440714511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21906785751 + ... + 21906785756.

It is an arithmetic number, because the mean of its divisors is an integer number (43813571508).

Almost surely, 2^131440714521 is an apocalyptic number.

It is an amenable number.

131440714521 is a deficient number, since it is larger than the sum of its proper divisors (43813571511).

131440714521 is an equidigital number, since it uses as much as digits as its factorization.

131440714521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43813571510.

The product of its (nonzero) digits is 13440, while the sum is 33.

Adding to 131440714521 its reverse (125417044131), we get a palindrome (256857758652).

The spelling of 131440714521 in words is "one hundred thirty-one billion, four hundred forty million, seven hundred fourteen thousand, five hundred twenty-one".