1313700138 has 24 divisors (see below), whose sum is σ = 2912546208. Its totient is φ = 427716072.

The previous prime is 1313700127. The next prime is 1313700139. The reversal of 1313700138 is 8310073131.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1313700139) 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, 847870 + ... + 849417.

It is an arithmetic number, because the mean of its divisors is an integer number (121356092).

Almost surely, 2^1313700138 is an apocalyptic number.

1313700138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1313700138 is an abundant number, since it is smaller than the sum of its proper divisors (1598846070).

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

1313700138 is a wasteful number, since it uses less digits than its factorization.

1313700138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697338 (or 1697335 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1313700138 is about 36245.0015588357. The cubic root of 1313700138 is about 1095.2133993297.

Adding to 1313700138 its reverse (8310073131), we get a palindrome (9623773269).

The spelling of 1313700138 in words is "one billion, three hundred thirteen million, seven hundred thousand, one hundred thirty-eight".