1313112120 has 64 divisors (see below), whose sum is σ = 3968140320. Its totient is φ = 347602944.

The previous prime is 1313112109. The next prime is 1313112131. The reversal of 1313112120 is 212113131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1313112109) and next prime (1313112131).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1313112120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23497 + ... + 56376.

Almost surely, 2^1313112120 is an apocalyptic number.

1313112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313112120 is an abundant number, since it is smaller than the sum of its proper divisors (2655028200).

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

1313112120 is a wasteful number, since it uses less digits than its factorization.

1313112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80024 (or 80020 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1313112120 is about 36236.8889393116. Note that the first 3 decimals coincide. The cubic root of 1313112120 is about 1095.0499674869.

Adding to 1313112120 its reverse (212113131), we get a palindrome (1525225251).

The spelling of 1313112120 in words is "one billion, three hundred thirteen million, one hundred twelve thousand, one hundred twenty".