12131322 has 24 divisors (see below), whose sum is σ = 28224576. Its totient is φ = 3466008.

The previous prime is 12131321. The next prime is 12131347. The reversal of 12131322 is 22313121.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12131321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20338 + ... + 20925.

It is an arithmetic number, because the mean of its divisors is an integer number (1176024).

Almost surely, 2^12131322 is an apocalyptic number.

12131322 is an abundant number, since it is smaller than the sum of its proper divisors (16093254).

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

12131322 is a wasteful number, since it uses less digits than its factorization.

12131322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41282 (or 41275 counting only the distinct ones).

The product of its digits is 72, while the sum is 15.

The square root of 12131322 is about 3483.0047372922. The cubic root of 12131322 is about 229.7749657815.

Adding to 12131322 its reverse (22313121), we get a palindrome (34444443).

The spelling of 12131322 in words is "twelve million, one hundred thirty-one thousand, three hundred twenty-two".