122355631 has 4 divisors (see below), whose sum is σ = 122989792. Its totient is φ = 121721472.

The previous prime is 122355577. The next prime is 122355637. The reversal of 122355631 is 136553221.

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 122355631 - 2⁷ = 122355503 is a prime.

It is a super-2 number, since 2×122355631² = 29941800874816322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122355631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122355637) 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, 316791 + ... + 317176.

It is an arithmetic number, because the mean of its divisors is an integer number (30747448).

Almost surely, 2^122355631 is an apocalyptic number.

122355631 is a deficient number, since it is larger than the sum of its proper divisors (634161).

122355631 is an equidigital number, since it uses as much as digits as its factorization.

122355631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634160.

The product of its digits is 5400, while the sum is 28.

The square root of 122355631 is about 11061.4479612752. The cubic root of 122355631 is about 496.4490153847.

The spelling of 122355631 in words is "one hundred twenty-two million, three hundred fifty-five thousand, six hundred thirty-one".