1020321203 has 8 divisors (see below), whose sum is σ = 1140226416. Its totient is φ = 904940800.

The previous prime is 1020321199. The next prime is 1020321209. The reversal of 1020321203 is 3021230201.

It is a happy number.

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 1020321203 - 2² = 1020321199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020321209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130726 + ... + 1131627.

It is an arithmetic number, because the mean of its divisors is an integer number (142528302).

Almost surely, 2^1020321203 is an apocalyptic number.

1020321203 is a deficient number, since it is larger than the sum of its proper divisors (119905213).

1020321203 is a wasteful number, since it uses less digits than its factorization.

1020321203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262405.

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

The square root of 1020321203 is about 31942.4670775443. The cubic root of 1020321203 is about 1006.7283619460.

Adding to 1020321203 its reverse (3021230201), we get a palindrome (4041551404).

It can be divided in two parts, 1020 and 321203, that added together give a palindrome (322223).

The spelling of 1020321203 in words is "one billion, twenty million, three hundred twenty-one thousand, two hundred three".