122737431 has 4 divisors (see below), whose sum is σ = 163649912. Its totient is φ = 81824952.

The previous prime is 122737427. The next prime is 122737441. The reversal of 122737431 is 134737221.

122737431 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 122737431 - 2² = 122737427 is a prime.

It is a super-2 number, since 2×122737431² = 30128953936959522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122737441) 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, 20456236 + ... + 20456241.

It is an arithmetic number, because the mean of its divisors is an integer number (40912478).

Almost surely, 2^122737431 is an apocalyptic number.

122737431 is a deficient number, since it is larger than the sum of its proper divisors (40912481).

122737431 is an equidigital number, since it uses as much as digits as its factorization.

122737431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40912480.

The product of its digits is 7056, while the sum is 30.

The square root of 122737431 is about 11078.6926575296. The cubic root of 122737431 is about 496.9648543958.

The spelling of 122737431 in words is "one hundred twenty-two million, seven hundred thirty-seven thousand, four hundred thirty-one".