122731457247 has 96 divisors (see below), whose sum is σ = 210311362560. Its totient is φ = 67518696960.

The previous prime is 122731457213. The next prime is 122731457249. The reversal of 122731457247 is 742754137221.

122731457247 is a `hidden beast` number, since 1 + 2 + 2 + 7 + 31 + 4 + 572 + 47 = 666.

It is not a de Polignac number, because 122731457247 - 2¹¹ = 122731455199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122731457249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 142876704 + ... + 142877562.

It is an arithmetic number, because the mean of its divisors is an integer number (2190743360).

Almost surely, 2^122731457247 is an apocalyptic number.

122731457247 is a deficient number, since it is larger than the sum of its proper divisors (87579905313).

122731457247 is a wasteful number, since it uses less digits than its factorization.

122731457247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1650 counting only the distinct ones).

The product of its digits is 658560, while the sum is 45.

The spelling of 122731457247 in words is "one hundred twenty-two billion, seven hundred thirty-one million, four hundred fifty-seven thousand, two hundred forty-seven".