1323213210 has 48 divisors (see below), whose sum is σ = 3753116640. Its totient is φ = 320778720.

The previous prime is 1323213209. The next prime is 1323213233. The reversal of 1323213210 is 123123231.

1323213210 is a `hidden beast` number, since 1 + 323 + 21 + 321 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 667300 + ... + 669279.

It is an arithmetic number, because the mean of its divisors is an integer number (78189930).

Almost surely, 2^1323213210 is an apocalyptic number.

1323213210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1323213210 is an abundant number, since it is smaller than the sum of its proper divisors (2429903430).

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

1323213210 is a wasteful number, since it uses less digits than its factorization.

1323213210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336603 (or 1336600 counting only the distinct ones).

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

The square root of 1323213210 is about 36375.9977182757. The cubic root of 1323213210 is about 1097.8506819156.

Adding to 1323213210 its reverse (123123231), we get a palindrome (1446336441).

It can be divided in two parts, 132321 and 3210, that added together give a palindrome (135531).

The spelling of 1323213210 in words is "one billion, three hundred twenty-three million, two hundred thirteen thousand, two hundred ten".