117220577431 has 4 divisors (see below), whose sum is σ = 117723670272. Its totient is φ = 116717484592.

The previous prime is 117220577423. The next prime is 117220577437. The reversal of 117220577431 is 134775022711.

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 117220577431 - 2³ = 117220577423 is a prime.

It is a super-2 number, since 2×117220577431² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117220577437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251546071 + ... + 251546536.

It is an arithmetic number, because the mean of its divisors is an integer number (29430917568).

Almost surely, 2^117220577431 is an apocalyptic number.

117220577431 is a deficient number, since it is larger than the sum of its proper divisors (503092841).

117220577431 is an equidigital number, since it uses as much as digits as its factorization.

117220577431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503092840.

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 117220577431 in words is "one hundred seventeen billion, two hundred twenty million, five hundred seventy-seven thousand, four hundred thirty-one".