1031313203 has 4 divisors (see below), whose sum is σ = 1037011248. Its totient is φ = 1025615160.

The previous prime is 1031313191. The next prime is 1031313223. The reversal of 1031313203 is 3023131301.

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 1031313203 - 2¹⁰ = 1031312179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031313223) 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, 2848751 + ... + 2849112.

It is an arithmetic number, because the mean of its divisors is an integer number (259252812).

Almost surely, 2^1031313203 is an apocalyptic number.

1031313203 is a deficient number, since it is larger than the sum of its proper divisors (5698045).

1031313203 is an equidigital number, since it uses as much as digits as its factorization.

1031313203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698044.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1031313203 is about 32114.0655009608. The cubic root of 1031313203 is about 1010.3306446121.

Adding to 1031313203 its reverse (3023131301), we get a palindrome (4054444504).

The spelling of 1031313203 in words is "one billion, thirty-one million, three hundred thirteen thousand, two hundred three".