1213886203 has 4 divisors (see below), whose sum is σ = 1266663888. Its totient is φ = 1161108520.

The previous prime is 1213886197. The next prime is 1213886213. The reversal of 1213886203 is 3026883121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1213886203 - 2⁹ = 1213885691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213886213) 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, 26388808 + ... + 26388853.

It is an arithmetic number, because the mean of its divisors is an integer number (316665972).

Almost surely, 2^1213886203 is an apocalyptic number.

1213886203 is a deficient number, since it is larger than the sum of its proper divisors (52777685).

1213886203 is an equidigital number, since it uses as much as digits as its factorization.

1213886203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52777684.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1213886203 is about 34840.8697222099. The cubic root of 1213886203 is about 1066.7418293498.

The spelling of 1213886203 in words is "one billion, two hundred thirteen million, eight hundred eighty-six thousand, two hundred three".