1313123412 has 48 divisors (see below), whose sum is σ = 3166958592. Its totient is φ = 423218400.

The previous prime is 1313123387. The next prime is 1313123423. The reversal of 1313123412 is 2143213131.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32787 + ... + 60837.

It is an arithmetic number, because the mean of its divisors is an integer number (65978304).

Almost surely, 2^1313123412 is an apocalyptic number.

1313123412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1313123412 is an abundant number, since it is smaller than the sum of its proper divisors (1853835180).

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

1313123412 is a wasteful number, since it uses less digits than its factorization.

1313123412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28188 (or 28186 counting only the distinct ones).

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

The square root of 1313123412 is about 36237.0447470541. The cubic root of 1313123412 is about 1095.0531064087.

Adding to 1313123412 its reverse (2143213131), we get a palindrome (3456336543).

The spelling of 1313123412 in words is "one billion, three hundred thirteen million, one hundred twenty-three thousand, four hundred twelve".