1220311323 has 48 divisors (see below), whose sum is σ = 2326910976. Its totient is φ = 596632320.

The previous prime is 1220311291. The next prime is 1220311327. The reversal of 1220311323 is 3231130221.

1220311323 is a `hidden beast` number, since 12 + 20 + 311 + 323 = 666.

1220311323 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1220311323 - 2⁵ = 1220311291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220311296 and 1220311305.

It is not an unprimeable number, because it can be changed into a prime (1220311327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40011 + ... + 63572.

It is an arithmetic number, because the mean of its divisors is an integer number (48477312).

Almost surely, 2^1220311323 is an apocalyptic number.

1220311323 is a deficient number, since it is larger than the sum of its proper divisors (1106599653).

1220311323 is a wasteful number, since it uses less digits than its factorization.

1220311323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103624 (or 103621 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1220311323 is about 34932.9546846527. The cubic root of 1220311323 is about 1068.6206125502.

Adding to 1220311323 its reverse (3231130221), we get a palindrome (4451441544).

The spelling of 1220311323 in words is "one billion, two hundred twenty million, three hundred eleven thousand, three hundred twenty-three".