1213103243434 has 4 divisors (see below), whose sum is σ = 1819654865154. Its totient is φ = 606551621716.

The previous prime is 1213103243419. The next prime is 1213103243449. The reversal of 1213103243434 is 4343423013121.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1213103243419) and next prime (1213103243449).

It can be written as a sum of positive squares in only one way, i.e., 1111053024225 + 102050219209 = 1054065^2 + 319453^2 .

It is a super-2 number, since 2×1213103243434² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1213103243396 and 1213103243405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303275810857 + ... + 303275810860.

Almost surely, 2^{1213103243434} is an apocalyptic number.

1213103243434 is a deficient number, since it is larger than the sum of its proper divisors (606551621720).

1213103243434 is an equidigital number, since it uses as much as digits as its factorization.

1213103243434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606551621719.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 1213103243434 its reverse (4343423013121), we get a palindrome (5556526256555).

The spelling of 1213103243434 in words is "one trillion, two hundred thirteen billion, one hundred three million, two hundred forty-three thousand, four hundred thirty-four".