1031320203 has 16 divisors (see below), whose sum is σ = 1417291776. Its totient is φ = 666580320.

The previous prime is 1031320193. The next prime is 1031320219. The reversal of 1031320203 is 3020231301.

It is not a de Polignac number, because 1031320203 - 2⁴ = 1031320187 is a prime.

It is a super-2 number, since 2×1031320203² = 2127242722231922418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1031320403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14998 + ... + 47828.

It is an arithmetic number, because the mean of its divisors is an integer number (88580736).

Almost surely, 2^1031320203 is an apocalyptic number.

1031320203 is a deficient number, since it is larger than the sum of its proper divisors (385971573).

1031320203 is a wasteful number, since it uses less digits than its factorization.

1031320203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33154.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1031320203 is about 32114.1744872883. The cubic root of 1031320203 is about 1010.3329304675.

Adding to 1031320203 its reverse (3020231301), we get a palindrome (4051551504).

The spelling of 1031320203 in words is "one billion, thirty-one million, three hundred twenty thousand, two hundred three".