31101230203 has 4 divisors (see below), whose sum is σ = 31114702080. Its totient is φ = 31087758328.

The previous prime is 31101230191. The next prime is 31101230243. The reversal of 31101230203 is 30203210113.

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-31101230203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31101230243) 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, 6732475 + ... + 6737092.

It is an arithmetic number, because the mean of its divisors is an integer number (7778675520).

Almost surely, 2^31101230203 is an apocalyptic number.

31101230203 is a deficient number, since it is larger than the sum of its proper divisors (13471877).

31101230203 is a wasteful number, since it uses less digits than its factorization.

31101230203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13471876.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31101230203 its reverse (30203210113), we get a palindrome (61304440316).

The spelling of 31101230203 in words is "thirty-one billion, one hundred one million, two hundred thirty thousand, two hundred three".