31130003321203 has 4 divisors (see below), whose sum is σ = 31132112557680. Its totient is φ = 31127894084728.

The previous prime is 31130003321177. The next prime is 31130003321309. The reversal of 31130003321203 is 30212330003113.

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-31130003321203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31130003321503) 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, 1054596100 + ... + 1054625617.

It is an arithmetic number, because the mean of its divisors is an integer number (7783028139420).

Almost surely, 2^{31130003321203} is an apocalyptic number.

31130003321203 is a deficient number, since it is larger than the sum of its proper divisors (2109236477).

31130003321203 is a wasteful number, since it uses less digits than its factorization.

31130003321203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109236476.

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

Adding to 31130003321203 its reverse (30212330003113), we get a palindrome (61342333324316).

The spelling of 31130003321203 in words is "thirty-one trillion, one hundred thirty billion, three million, three hundred twenty-one thousand, two hundred three".