1213200436 has 24 divisors (see below), whose sum is σ = 2428569920. Its totient is φ = 519478272.

The previous prime is 1213200433. The next prime is 1213200533. The reversal of 1213200436 is 6340023121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213200433) 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, 13495 + ... + 51073.

Almost surely, 2^1213200436 is an apocalyptic number.

It is an amenable number.

1213200436 is an abundant number, since it is smaller than the sum of its proper divisors (1215369484).

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

1213200436 is a wasteful number, since it uses less digits than its factorization.

1213200436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38743 (or 38741 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1213200436 is about 34831.0269156682. The cubic root of 1213200436 is about 1066.5409115201.

Adding to 1213200436 its reverse (6340023121), we get a palindrome (7553223557).

The spelling of 1213200436 in words is "one billion, two hundred thirteen million, two hundred thousand, four hundred thirty-six".