122523631 has 4 divisors (see below), whose sum is σ = 123488512. Its totient is φ = 121558752.

The previous prime is 122523623. The next prime is 122523659. The reversal of 122523631 is 136325221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136325221 = 1709 ⋅79769.

It is a cyclic number.

It is not a de Polignac number, because 122523631 - 2³ = 122523623 is a prime.

It is a super-2 number, since 2×122523631² = 30024080306848322, 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 = 122523596 and 122523605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122523601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482250 + ... + 482503.

It is an arithmetic number, because the mean of its divisors is an integer number (30872128).

Almost surely, 2^122523631 is an apocalyptic number.

122523631 is a deficient number, since it is larger than the sum of its proper divisors (964881).

122523631 is an equidigital number, since it uses as much as digits as its factorization.

122523631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964880.

The product of its digits is 2160, while the sum is 25.

The square root of 122523631 is about 11069.0392988732. The cubic root of 122523631 is about 496.6761273716.

Adding to 122523631 its reverse (136325221), we get a palindrome (258848852).

The spelling of 122523631 in words is "one hundred twenty-two million, five hundred twenty-three thousand, six hundred thirty-one".