1213130132 has 12 divisors (see below), whose sum is σ = 2247858900. Its totient is φ = 570884736.

The previous prime is 1213130131. The next prime is 1213130143. The reversal of 1213130132 is 2310313121.

It can be written as a sum of positive squares in 2 ways, for example, as 904565776 + 308564356 = 30076^2 + 17566^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1213130132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213130131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8920007 + ... + 8920142.

It is an arithmetic number, because the mean of its divisors is an integer number (187321575).

Almost surely, 2^1213130132 is an apocalyptic number.

It is an amenable number.

1213130132 is a deficient number, since it is larger than the sum of its proper divisors (1034728768).

1213130132 is a wasteful number, since it uses less digits than its factorization.

1213130132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17840170 (or 17840168 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1213130132 is about 34830.0176858985. The cubic root of 1213130132 is about 1066.5203093897.

Adding to 1213130132 its reverse (2310313121), we get a palindrome (3523443253).

The spelling of 1213130132 in words is "one billion, two hundred thirteen million, one hundred thirty thousand, one hundred thirty-two".