1323021413 has 24 divisors (see below), whose sum is σ = 1651954392. Its totient is φ = 1052642304.

The previous prime is 1323021407. The next prime is 1323021419. The reversal of 1323021413 is 3141203231.

It is an interprime number because it is at equal distance from previous prime (1323021407) and next prime (1323021419).

It can be written as a sum of positive squares in 4 ways, for example, as 712783204 + 610238209 = 26698^2 + 24703^2 .

It is not a de Polignac number, because 1323021413 - 2¹⁰ = 1323020389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323021419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49931 + ... + 71687.

It is an arithmetic number, because the mean of its divisors is an integer number (68831433).

Almost surely, 2^1323021413 is an apocalyptic number.

It is an amenable number.

1323021413 is a deficient number, since it is larger than the sum of its proper divisors (328932979).

1323021413 is a wasteful number, since it uses less digits than its factorization.

1323021413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21861 (or 21854 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1323021413 is about 36373.3613101676. The cubic root of 1323021413 is about 1097.7976356290.

Adding to 1323021413 its reverse (3141203231), we get a palindrome (4464224644).

It can be divided in two parts, 13230 and 21413, that added together give a palindrome (34643).

The spelling of 1323021413 in words is "one billion, three hundred twenty-three million, twenty-one thousand, four hundred thirteen".