1213234402 has 8 divisors (see below), whose sum is σ = 1821570012. Its totient is φ = 606044400.

The previous prime is 1213234381. The next prime is 1213234409. The reversal of 1213234402 is 2044323121.

It can be written as a sum of positive squares in 2 ways, for example, as 1188939361 + 24295041 = 34481^2 + 4929^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1213234409) 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 3 ways as a sum of consecutive naturals, for example, 283749 + ... + 287992.

Almost surely, 2^1213234402 is an apocalyptic number.

1213234402 is a deficient number, since it is larger than the sum of its proper divisors (608335610).

1213234402 is a wasteful number, since it uses less digits than its factorization.

1213234402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572804.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1213234402 is about 34831.5144947790. The cubic root of 1213234402 is about 1066.5508647506.

Adding to 1213234402 its reverse (2044323121), we get a palindrome (3257557523).

The spelling of 1213234402 in words is "one billion, two hundred thirteen million, two hundred thirty-four thousand, four hundred two".