1361323120 has 20 divisors (see below), whose sum is σ = 3165076440. Its totient is φ = 544529216.

The previous prime is 1361323081. The next prime is 1361323141. The reversal of 1361323120 is 213231631.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1361323091 and 1361323100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8508190 + ... + 8508349.

It is an arithmetic number, because the mean of its divisors is an integer number (158253822).

Almost surely, 2^1361323120 is an apocalyptic number.

1361323120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361323120 is an abundant number, since it is smaller than the sum of its proper divisors (1803753320).

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

1361323120 is a wasteful number, since it uses less digits than its factorization.

1361323120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17016552 (or 17016546 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1361323120 is about 36896.1125323522. The cubic root of 1361323120 is about 1108.2908306136.

Adding to 1361323120 its reverse (213231631), we get a palindrome (1574554751).

The spelling of 1361323120 in words is "one billion, three hundred sixty-one million, three hundred twenty-three thousand, one hundred twenty".