1213131332 has 48 divisors (see below), whose sum is σ = 2490808320. Its totient is φ = 506250912.

The previous prime is 1213131331. The next prime is 1213131341. The reversal of 1213131332 is 2331313121.

It is not an unprimeable number, because it can be changed into a prime (1213131331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173333 + ... + 180195.

It is an arithmetic number, because the mean of its divisors is an integer number (51891840).

Almost surely, 2^1213131332 is an apocalyptic number.

It is an amenable number.

1213131332 is an abundant number, since it is smaller than the sum of its proper divisors (1277676988).

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

1213131332 is a wasteful number, since it uses less digits than its factorization.

1213131332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7040 (or 7038 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 1213131332 is about 34830.0349124143. The cubic root of 1213131332 is about 1066.5206610486.

Adding to 1213131332 its reverse (2331313121), we get a palindrome (3544444453).

The spelling of 1213131332 in words is "one billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred thirty-two".