1312133406 has 24 divisors (see below), whose sum is σ = 2787719640. Its totient is φ = 411649152.

The previous prime is 1312133401. The next prime is 1312133413. The reversal of 1312133406 is 6043312131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312133401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376621 + ... + 380088.

It is an arithmetic number, because the mean of its divisors is an integer number (116154985).

Almost surely, 2^1312133406 is an apocalyptic number.

1312133406 is an abundant number, since it is smaller than the sum of its proper divisors (1475586234).

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

1312133406 is a wasteful number, since it uses less digits than its factorization.

1312133406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756748 (or 756731 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1312133406 is about 36223.3820342607. The cubic root of 1312133406 is about 1094.7778386265. Note that the first 3 decimals are identical.

Adding to 1312133406 its reverse (6043312131), we get a palindrome (7355445537).

The spelling of 1312133406 in words is "one billion, three hundred twelve million, one hundred thirty-three thousand, four hundred six".