1321423008 has 24 divisors (see below), whose sum is σ = 3468735648. Its totient is φ = 440474304.

The previous prime is 1321422983. The next prime is 1321423009. The reversal of 1321423008 is 8003241231.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1321423009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6882316 + ... + 6882507.

It is an arithmetic number, because the mean of its divisors is an integer number (144530652).

Almost surely, 2^1321423008 is an apocalyptic number.

It is an amenable number.

1321423008 is an abundant number, since it is smaller than the sum of its proper divisors (2147312640).

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

1321423008 is a wasteful number, since it uses less digits than its factorization.

1321423008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13764836 (or 13764828 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1321423008 is about 36351.3824771493. The cubic root of 1321423008 is about 1097.3553569823.

Adding to 1321423008 its reverse (8003241231), we get a palindrome (9324664239).

The spelling of 1321423008 in words is "one billion, three hundred twenty-one million, four hundred twenty-three thousand, eight".