1313120124 has 18 divisors (see below), whose sum is σ = 3319275960. Its totient is φ = 437706696.

The previous prime is 1313120119. The next prime is 1313120129. The reversal of 1313120124 is 4210213131.

It is an interprime number because it is at equal distance from previous prime (1313120119) and next prime (1313120129).

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a junction number, because it is equal to n+sod(n) for n = 1313120097 and 1313120106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313120129) 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 5 ways as a sum of consecutive naturals, for example, 18237744 + ... + 18237815.

It is an arithmetic number, because the mean of its divisors is an integer number (184404220).

Almost surely, 2^1313120124 is an apocalyptic number.

It is an amenable number.

1313120124 is an abundant number, since it is smaller than the sum of its proper divisors (2006155836).

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

1313120124 is a wasteful number, since it uses less digits than its factorization.

1313120124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36475569 (or 36475564 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1313120124 is about 36236.9993790877. Note that the first 3 decimals coincide. The cubic root of 1313120124 is about 1095.0521924206.

Adding to 1313120124 its reverse (4210213131), we get a palindrome (5523333255).

The spelling of 1313120124 in words is "one billion, three hundred thirteen million, one hundred twenty thousand, one hundred twenty-four".