1213352452 has 12 divisors (see below), whose sum is σ = 2286702796. Its totient is φ = 560008800.

The previous prime is 1213352449. The next prime is 1213352453. The reversal of 1213352452 is 2542533121.

It can be written as a sum of positive squares in 2 ways, for example, as 354041856 + 859310596 = 18816^2 + 29314^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1213352452.

It is not an unprimeable number, because it can be changed into a prime (1213352453) 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, 11666799 + ... + 11666902.

Almost surely, 2^1213352452 is an apocalyptic number.

It is an amenable number.

1213352452 is a deficient number, since it is larger than the sum of its proper divisors (1073350344).

1213352452 is a wasteful number, since it uses less digits than its factorization.

1213352452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23333718 (or 23333716 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 1213352452 is about 34833.2090396507. The cubic root of 1213352452 is about 1066.5854561002.

Adding to 1213352452 its reverse (2542533121), we get a palindrome (3755885573).

The spelling of 1213352452 in words is "one billion, two hundred thirteen million, three hundred fifty-two thousand, four hundred fifty-two".