123131226 has 8 divisors (see below), whose sum is σ = 246262464. Its totient is φ = 41043740.

The previous prime is 123131219. The next prime is 123131237. The reversal of 123131226 is 622131321.

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

123131226 is an admirable number.

It is a super-2 number, since 2×123131226² = 30322597632526152, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10260930 + ... + 10260941.

It is an arithmetic number, because the mean of its divisors is an integer number (30782808).

Almost surely, 2^123131226 is an apocalyptic number.

123131226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123131226 is a wasteful number, since it uses less digits than its factorization.

123131226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20521876.

The product of its digits is 432, while the sum is 21.

The square root of 123131226 is about 11096.4510542786. The cubic root of 123131226 is about 497.4957800371.

Adding to 123131226 its reverse (622131321), we get a palindrome (745262547).

The spelling of 123131226 in words is "one hundred twenty-three million, one hundred thirty-one thousand, two hundred twenty-six".