1231345346 has 16 divisors (see below), whose sum is σ = 2302776000. Its totient is φ = 479744880.

The previous prime is 1231345337. The next prime is 1231345351. The reversal of 1231345346 is 6435431321.

It is a super-2 number, since 2×1231345346² = 3032422722231719432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3997721 + ... + 3998028.

It is an arithmetic number, because the mean of its divisors is an integer number (143923500).

Almost surely, 2^1231345346 is an apocalyptic number.

1231345346 is a deficient number, since it is larger than the sum of its proper divisors (1071430654).

1231345346 is a wasteful number, since it uses less digits than its factorization.

1231345346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7995769.

The product of its digits is 25920, while the sum is 32.

The square root of 1231345346 is about 35090.5307169897. The cubic root of 1231345346 is about 1071.8317667099.

Adding to 1231345346 its reverse (6435431321), we get a palindrome (7666776667).

The spelling of 1231345346 in words is "one billion, two hundred thirty-one million, three hundred forty-five thousand, three hundred forty-six".