1231120226 has 8 divisors (see below), whose sum is σ = 2110491840. Its totient is φ = 527622948.

The previous prime is 1231120201. The next prime is 1231120237. The reversal of 1231120226 is 6220211321.

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

It is a junction number, because it is equal to n+sod(n) for n = 1231120198 and 1231120207.

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, 43968566 + ... + 43968593.

It is an arithmetic number, because the mean of its divisors is an integer number (263811480).

Almost surely, 2^1231120226 is an apocalyptic number.

1231120226 is a deficient number, since it is larger than the sum of its proper divisors (879371614).

1231120226 is an equidigital number, since it uses as much as digits as its factorization.

1231120226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87937168.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1231120226 is about 35087.3228673833. The cubic root of 1231120226 is about 1071.7664437214.

Adding to 1231120226 its reverse (6220211321), we get a palindrome (7451331547).

The spelling of 1231120226 in words is "one billion, two hundred thirty-one million, one hundred twenty thousand, two hundred twenty-six".