124131213 has 6 divisors (see below), whose sum is σ = 179300654. Its totient is φ = 82754136.

The previous prime is 124131209. The next prime is 124131233. The reversal of 124131213 is 312131421.

It can be written as a sum of positive squares in only one way, i.e., 74597769 + 49533444 = 8637^2 + 7038^2 .

It is not a de Polignac number, because 124131213 - 2² = 124131209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124131233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6896170 + ... + 6896187.

Almost surely, 2^124131213 is an apocalyptic number.

It is an amenable number.

124131213 is a deficient number, since it is larger than the sum of its proper divisors (55169441).

124131213 is a wasteful number, since it uses less digits than its factorization.

124131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13792363 (or 13792360 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 124131213 is about 11141.4188055202. The cubic root of 124131213 is about 498.8389232218.

Adding to 124131213 its reverse (312131421), we get a palindrome (436262634).

The spelling of 124131213 in words is "one hundred twenty-four million, one hundred thirty-one thousand, two hundred thirteen".