1323131142 has 16 divisors (see below), whose sum is σ = 2685759552. Its totient is φ = 434460840.

The previous prime is 1323131129. The next prime is 1323131149. The reversal of 1323131142 is 2411313231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323131149) 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, 1645284 + ... + 1646087.

It is an arithmetic number, because the mean of its divisors is an integer number (167859972).

Almost surely, 2^1323131142 is an apocalyptic number.

1323131142 is an abundant number, since it is smaller than the sum of its proper divisors (1362628410).

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

1323131142 is a wasteful number, since it uses less digits than its factorization.

1323131142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291443.

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

The square root of 1323131142 is about 36374.8696492510. The cubic root of 1323131142 is about 1097.8279845726.

Adding to 1323131142 its reverse (2411313231), we get a palindrome (3734444373).

The spelling of 1323131142 in words is "one billion, three hundred twenty-three million, one hundred thirty-one thousand, one hundred forty-two".