1323138 has 16 divisors (see below), whose sum is σ = 2673216. Its totient is φ = 436560.

The previous prime is 1323137. The next prime is 1323139. The reversal of 1323138 is 8313231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1323137) and next prime (1323139).

It is not an unprimeable number, because it can be changed into a prime (1323131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (167076).

2^1323138 is an apocalyptic number.

1323138 is an abundant number, since it is smaller than the sum of its proper divisors (1350078).

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

1323138 is a wasteful number, since it uses less digits than its factorization.

1323138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249.

The product of its digits is 432, while the sum is 21.

The square root of 1323138 is about 1150.2773578577. The cubic root of 1323138 is about 109.7829881309.

Adding to 1323138 its reverse (8313231), we get a palindrome (9636369).

The spelling of 1323138 in words is "one million, three hundred twenty-three thousand, one hundred thirty-eight".