1231226258 has 16 divisors (see below), whose sum is σ = 2058397920. Its totient is φ = 548905536.

The previous prime is 1231226251. The next prime is 1231226299. The reversal of 1231226258 is 8526221321.

It is not an unprimeable number, because it can be changed into a prime (1231226251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952316 + ... + 953607.

It is an arithmetic number, because the mean of its divisors is an integer number (128649870).

Almost surely, 2^1231226258 is an apocalyptic number.

1231226258 is a deficient number, since it is larger than the sum of its proper divisors (827171662).

1231226258 is a wasteful number, since it uses less digits than its factorization.

1231226258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905961.

The product of its digits is 11520, while the sum is 32.

The square root of 1231226258 is about 35088.8338079224. The cubic root of 1231226258 is about 1071.7972119802.

Adding to 1231226258 its reverse (8526221321), we get a palindrome (9757447579).

The spelling of 1231226258 in words is "one billion, two hundred thirty-one million, two hundred twenty-six thousand, two hundred fifty-eight".