1323131394 has 32 divisors (see below), whose sum is σ = 2854857600. Its totient is φ = 406397952.

The previous prime is 1323131393. The next prime is 1323131399. The reversal of 1323131394 is 4931313231.

It is not an unprimeable number, because it can be changed into a prime (1323131393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30307 + ... + 59705.

It is an arithmetic number, because the mean of its divisors is an integer number (89214300).

Almost surely, 2^1323131394 is an apocalyptic number.

1323131394 is an abundant number, since it is smaller than the sum of its proper divisors (1531726206).

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

1323131394 is a wasteful number, since it uses less digits than its factorization.

1323131394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29994.

The product of its digits is 5832, while the sum is 30.

The square root of 1323131394 is about 36374.8731131808. The cubic root of 1323131394 is about 1097.8280542690.

The spelling of 1323131394 in words is "one billion, three hundred twenty-three million, one hundred thirty-one thousand, three hundred ninety-four".