1423321320 has 32 divisors (see below), whose sum is σ = 4269964320. Its totient is φ = 379552320.

The previous prime is 1423321303. The next prime is 1423321373. The reversal of 1423321320 is 231233241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5930386 + ... + 5930625.

It is an arithmetic number, because the mean of its divisors is an integer number (133436385).

Almost surely, 2^1423321320 is an apocalyptic number.

1423321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423321320 is an abundant number, since it is smaller than the sum of its proper divisors (2846643000).

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

1423321320 is a wasteful number, since it uses less digits than its factorization.

1423321320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11861025 (or 11861021 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1423321320 is about 37726.9309644980. The cubic root of 1423321320 is about 1124.8665046536.

Adding to 1423321320 its reverse (231233241), we get a palindrome (1654554561).

It can be divided in two parts, 14233 and 21320, that added together give a palindrome (35553).

The spelling of 1423321320 in words is "one billion, four hundred twenty-three million, three hundred twenty-one thousand, three hundred twenty".