1312345050 has 96 divisors (see below), whose sum is σ = 3314520000. Its totient is φ = 343580160.

The previous prime is 1312345037. The next prime is 1312345051. The reversal of 1312345050 is 505432131.

It is a self number, because there is not a number n which added to its sum of digits gives 1312345050.

It is not an unprimeable number, because it can be changed into a prime (1312345051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2629701 + ... + 2630199.

It is an arithmetic number, because the mean of its divisors is an integer number (34526250).

Almost surely, 2^1312345050 is an apocalyptic number.

1312345050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312345050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1657260000).

1312345050 is an abundant number, since it is smaller than the sum of its proper divisors (2002174950).

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

1312345050 is a wasteful number, since it uses less digits than its factorization.

1312345050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1312345050 is about 36226.3032891848. The cubic root of 1312345050 is about 1094.8366971499.

Adding to 1312345050 its reverse (505432131), we get a palindrome (1817777181).

The spelling of 1312345050 in words is "one billion, three hundred twelve million, three hundred forty-five thousand, fifty".