1213661035 has 8 divisors (see below), whose sum is σ = 1459291680. Its totient is φ = 968996544.

The previous prime is 1213661027. The next prime is 1213661039. The reversal of 1213661035 is 5301663121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213661035 - 2³ = 1213661027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213660994 and 1213661012.

It is not an unprimeable number, because it can be changed into a prime (1213661039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238770 + ... + 243799.

It is an arithmetic number, because the mean of its divisors is an integer number (182411460).

Almost surely, 2^1213661035 is an apocalyptic number.

1213661035 is a deficient number, since it is larger than the sum of its proper divisors (245630645).

1213661035 is an equidigital number, since it uses as much as digits as its factorization.

1213661035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483077.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1213661035 is about 34837.6381949179. The cubic root of 1213661035 is about 1066.6758673794.

The spelling of 1213661035 in words is "one billion, two hundred thirteen million, six hundred sixty-one thousand, thirty-five".