1123313001320 has 64 divisors (see below), whose sum is σ = 2619934243200. Its totient is φ = 432947441920.

The previous prime is 1123313001319. The next prime is 1123313001329. The reversal of 1123313001320 is 231003133211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1123313001292 and 1123313001301.

It is not an unprimeable number, because it can be changed into a prime (1123313001329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416564 + ... + 1555683.

It is an arithmetic number, because the mean of its divisors is an integer number (40936472550).

Almost surely, 2^{1123313001320} is an apocalyptic number.

1123313001320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123313001320 is an abundant number, since it is smaller than the sum of its proper divisors (1496621241880).

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

1123313001320 is a wasteful number, since it uses less digits than its factorization.

1123313001320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972778 (or 1972774 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1123313001320 its reverse (231003133211), we get a palindrome (1354316134531).

The spelling of 1123313001320 in words is "one trillion, one hundred twenty-three billion, three hundred thirteen million, one thousand, three hundred twenty".