1311502104 has 96 divisors (see below), whose sum is σ = 4018472640. Its totient is φ = 397418400.

The previous prime is 1311502099. The next prime is 1311502109. The reversal of 1311502104 is 4012051131.

It is an interprime number because it is at equal distance from previous prime (1311502099) and next prime (1311502109).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311502109) 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 23 ways as a sum of consecutive naturals, for example, 9282 + ... + 52049.

It is an arithmetic number, because the mean of its divisors is an integer number (41859090).

Almost surely, 2^1311502104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311502104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2009236320).

1311502104 is an abundant number, since it is smaller than the sum of its proper divisors (2706970536).

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

1311502104 is a wasteful number, since it uses less digits than its factorization.

1311502104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61363 (or 61347 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1311502104 is about 36214.6669734791. Note that the first 3 decimals coincide. The cubic root of 1311502104 is about 1094.6022349603.

Adding to 1311502104 its reverse (4012051131), we get a palindrome (5323553235).

The spelling of 1311502104 in words is "one billion, three hundred eleven million, five hundred two thousand, one hundred four".