122305631 has 8 divisors (see below), whose sum is σ = 143028864. Its totient is φ = 102395160.

The previous prime is 122305567. The next prime is 122305639. The reversal of 122305631 is 136503221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122305631 - 2⁶ = 122305567 is a prime.

It is a super-2 number, since 2×122305631² = 29917334748616322, 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 = 122305597 and 122305606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122305639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202865 + ... + 203466.

It is an arithmetic number, because the mean of its divisors is an integer number (17878608).

Almost surely, 2^122305631 is an apocalyptic number.

122305631 is a deficient number, since it is larger than the sum of its proper divisors (20723233).

122305631 is an equidigital number, since it uses as much as digits as its factorization.

122305631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406381.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 122305631 is about 11059.1876283930. The cubic root of 122305631 is about 496.3813823913.

Adding to 122305631 its reverse (136503221), we get a palindrome (258808852).

The spelling of 122305631 in words is "one hundred twenty-two million, three hundred five thousand, six hundred thirty-one".