131439451288417 has 4 divisors (see below), whose sum is σ = 133401234143536. Its totient is φ = 129477668433300.

The previous prime is 131439451288381. The next prime is 131439451288469. The reversal of 131439451288417 is 714882154934131.

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 131439451288417 - 2³⁵ = 131405091550049 is a prime.

It is a super-2 number, since 2×131439451288417² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131439451288217) 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, 980891427459 + ... + 980891427592.

It is an arithmetic number, because the mean of its divisors is an integer number (33350308535884).

Almost surely, 2^{131439451288417} is an apocalyptic number.

It is an amenable number.

131439451288417 is a deficient number, since it is larger than the sum of its proper divisors (1961782855119).

131439451288417 is an equidigital number, since it uses as much as digits as its factorization.

131439451288417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961782855118.

The product of its digits is 23224320, while the sum is 61.

The spelling of 131439451288417 in words is "one hundred thirty-one trillion, four hundred thirty-nine billion, four hundred fifty-one million, two hundred eighty-eight thousand, four hundred seventeen".