124123631 has 4 divisors (see below), whose sum is σ = 124202952. Its totient is φ = 124044312.

The previous prime is 124123627. The next prime is 124123697. The reversal of 124123631 is 136321421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136321421 = 431 ⋅316291.

It is a cyclic number.

It is not a de Polignac number, because 124123631 - 2² = 124123627 is a prime.

It is a super-2 number, since 2×124123631² = 30813351545248322, 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 = 124123597 and 124123606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124123621) 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, 37265 + ... + 40458.

It is an arithmetic number, because the mean of its divisors is an integer number (31050738).

Almost surely, 2^124123631 is an apocalyptic number.

124123631 is a deficient number, since it is larger than the sum of its proper divisors (79321).

124123631 is an equidigital number, since it uses as much as digits as its factorization.

124123631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79320.

The product of its digits is 864, while the sum is 23.

The square root of 124123631 is about 11141.0785384540. The cubic root of 124123631 is about 498.8287665667.

The spelling of 124123631 in words is "one hundred twenty-four million, one hundred twenty-three thousand, six hundred thirty-one".