31113050203 has 4 divisors (see below), whose sum is σ = 31871905128. Its totient is φ = 30354195280.

The previous prime is 31113050141. The next prime is 31113050219. The reversal of 31113050203 is 30205031113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31113050203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31113050503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379427401 + ... + 379427482.

It is an arithmetic number, because the mean of its divisors is an integer number (7967976282).

Almost surely, 2^31113050203 is an apocalyptic number.

31113050203 is a deficient number, since it is larger than the sum of its proper divisors (758854925).

31113050203 is an equidigital number, since it uses as much as digits as its factorization.

31113050203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758854924.

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 31113050203 its reverse (30205031113), we get a palindrome (61318081316).

The spelling of 31113050203 in words is "thirty-one billion, one hundred thirteen million, fifty thousand, two hundred three".