1020213203 has 4 divisors (see below), whose sum is σ = 1023136800. Its totient is φ = 1017289608.

The previous prime is 1020213199. The next prime is 1020213217. The reversal of 1020213203 is 3023120201.

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 1020213203 - 2² = 1020213199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020213253) 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, 1461275 + ... + 1461972.

It is an arithmetic number, because the mean of its divisors is an integer number (255784200).

Almost surely, 2^1020213203 is an apocalyptic number.

1020213203 is a deficient number, since it is larger than the sum of its proper divisors (2923597).

1020213203 is an equidigital number, since it uses as much as digits as its factorization.

1020213203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923596.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1020213203 is about 31940.7764933791. The cubic root of 1020213203 is about 1006.6928402889.

Adding to 1020213203 its reverse (3023120201), we get a palindrome (4043333404).

The spelling of 1020213203 in words is "one billion, twenty million, two hundred thirteen thousand, two hundred three".