31113120203 has 16 divisors (see below), whose sum is σ = 34193263104. Its totient is φ = 28075407360.

The previous prime is 31113120193. The next prime is 31113120221. The reversal of 31113120203 is 30202131113.

It is not a de Polignac number, because 31113120203 - 2¹² = 31113116107 is a prime.

It is a super-2 number, since 2×31113120203² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31113120223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1323851 + ... + 1347147.

It is an arithmetic number, because the mean of its divisors is an integer number (2137078944).

Almost surely, 2^31113120203 is an apocalyptic number.

31113120203 is a deficient number, since it is larger than the sum of its proper divisors (3080142901).

31113120203 is a wasteful number, since it uses less digits than its factorization.

31113120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24202.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31113120203 its reverse (30202131113), we get a palindrome (61315251316).

The spelling of 31113120203 in words is "thirty-one billion, one hundred thirteen million, one hundred twenty thousand, two hundred three".