31113030302203 has 4 divisors (see below), whose sum is σ = 31127308886440. Its totient is φ = 31098751717968.

The previous prime is 31113030302131. The next prime is 31113030302213. The reversal of 31113030302203 is 30220303031113.

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-31113030302203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31113030302213) 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, 7139288850 + ... + 7139293207.

It is an arithmetic number, because the mean of its divisors is an integer number (7781827221610).

Almost surely, 2^{31113030302203} is an apocalyptic number.

31113030302203 is a deficient number, since it is larger than the sum of its proper divisors (14278584237).

31113030302203 is a wasteful number, since it uses less digits than its factorization.

31113030302203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14278584236.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31113030302203 its reverse (30220303031113), we get a palindrome (61333333333316).

The spelling of 31113030302203 in words is "thirty-one trillion, one hundred thirteen billion, thirty million, three hundred two thousand, two hundred three".