1213240132 has 12 divisors (see below), whose sum is σ = 2286491116. Its totient is φ = 559956960.

The previous prime is 1213240129. The next prime is 1213240159. The reversal of 1213240132 is 2310423121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 630210816 + 583029316 = 25104^2 + 24146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11665719 + ... + 11665822.

Almost surely, 2^1213240132 is an apocalyptic number.

It is an amenable number.

1213240132 is a deficient number, since it is larger than the sum of its proper divisors (1073250984).

1213240132 is a wasteful number, since it uses less digits than its factorization.

1213240132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23331558 (or 23331556 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1213240132 is about 34831.5967477806. The cubic root of 1213240132 is about 1066.5525438234.

Adding to 1213240132 its reverse (2310423121), we get a palindrome (3523663253).

The spelling of 1213240132 in words is "one billion, two hundred thirteen million, two hundred forty thousand, one hundred thirty-two".