31020320003103 has 6 divisors (see below), whose sum is σ = 44807128893384. Its totient is φ = 20680213335396.

The previous prime is 31020320003093. The next prime is 31020320003149. The reversal of 31020320003103 is 30130002302013.

31020320003103 is a `hidden beast` number, since 3 + 10 + 20 + 320 + 0 + 0 + 310 + 3 = 666.

It is not a de Polignac number, because 31020320003103 - 2²² = 31020315808799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020320001103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1723351111275 + ... + 1723351111292.

It is an arithmetic number, because the mean of its divisors is an integer number (7467854815564).

Almost surely, 2^{31020320003103} is an apocalyptic number.

31020320003103 is a deficient number, since it is larger than the sum of its proper divisors (13786808890281).

31020320003103 is a wasteful number, since it uses less digits than its factorization.

31020320003103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446702222573 (or 3446702222570 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31020320003103 its reverse (30130002302013), we get a palindrome (61150322305116).

The spelling of 31020320003103 in words is "thirty-one trillion, twenty billion, three hundred twenty million, three thousand, one hundred three".