1313123312 has 20 divisors (see below), whose sum is σ = 2545424880. Its totient is φ = 656239488.

The previous prime is 1313123311. The next prime is 1313123347. The reversal of 1313123312 is 2133213131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313123311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15389 + ... + 53507.

It is an arithmetic number, because the mean of its divisors is an integer number (127271244).

Almost surely, 2^1313123312 is an apocalyptic number.

It is an amenable number.

1313123312 is a deficient number, since it is larger than the sum of its proper divisors (1232301568).

1313123312 is a wasteful number, since it uses less digits than its factorization.

1313123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40280 (or 40274 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 1313123312 is about 36237.0433672506. The cubic root of 1313123312 is about 1095.0530786111.

Adding to 1313123312 its reverse (2133213131), we get a palindrome (3446336443).

The spelling of 1313123312 in words is "one billion, three hundred thirteen million, one hundred twenty-three thousand, three hundred twelve".