122731597 has 4 divisors (see below), whose sum is σ = 122815840. Its totient is φ = 122647356.

The previous prime is 122731571. The next prime is 122731601. The reversal of 122731597 is 795137221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 795137221 = 127 ⋅6260923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122731597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122734597) 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, 39897 + ... + 42862.

It is an arithmetic number, because the mean of its divisors is an integer number (30703960).

Almost surely, 2^122731597 is an apocalyptic number.

It is an amenable number.

122731597 is a deficient number, since it is larger than the sum of its proper divisors (84243).

122731597 is an equidigital number, since it uses as much as digits as its factorization.

122731597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84242.

The product of its digits is 26460, while the sum is 37.

The square root of 122731597 is about 11078.4293561858. The cubic root of 122731597 is about 496.9569802999.

The spelling of 122731597 in words is "one hundred twenty-two million, seven hundred thirty-one thousand, five hundred ninety-seven".