122237431 has 4 divisors (see below), whose sum is σ = 128671000. Its totient is φ = 115803864.

The previous prime is 122237399. The next prime is 122237443. The reversal of 122237431 is 134732221.

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 122237431 - 2⁵ = 122237399 is a prime.

It is a super-2 number, since 2×122237431² = 29883979074959522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122237396 and 122237405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122237471) 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, 3216756 + ... + 3216793.

It is an arithmetic number, because the mean of its divisors is an integer number (32167750).

Almost surely, 2^122237431 is an apocalyptic number.

122237431 is a deficient number, since it is larger than the sum of its proper divisors (6433569).

122237431 is an equidigital number, since it uses as much as digits as its factorization.

122237431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433568.

The product of its digits is 2016, while the sum is 25.

The square root of 122237431 is about 11056.1037893102. The cubic root of 122237431 is about 496.2891012637.

Adding to 122237431 its reverse (134732221), we get a palindrome (256969652).

The spelling of 122237431 in words is "one hundred twenty-two million, two hundred thirty-seven thousand, four hundred thirty-one".