1213423601828 has 12 divisors (see below), whose sum is σ = 2128284740400. Its totient is φ = 605342247432.

The previous prime is 1213423601801. The next prime is 1213423601837. The reversal of 1213423601828 is 8281063243121.

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, 342386378 + ... + 342389921.

It is an arithmetic number, because the mean of its divisors is an integer number (177357061700).

Almost surely, 2^{1213423601828} is an apocalyptic number.

It is an amenable number.

1213423601828 is a deficient number, since it is larger than the sum of its proper divisors (914861138572).

1213423601828 is a wasteful number, since it uses less digits than its factorization.

1213423601828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684776746 (or 684776744 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

Adding to 1213423601828 its reverse (8281063243121), we get a palindrome (9494486844949).

The spelling of 1213423601828 in words is "one trillion, two hundred thirteen billion, four hundred twenty-three million, six hundred one thousand, eight hundred twenty-eight".