31030230221103 has 16 divisors (see below), whose sum is σ = 43553228515200. Its totient is φ = 19597127447520.

The previous prime is 31030230221099. The next prime is 31030230221129. The reversal of 31030230221103 is 30112203203013.

It is not a de Polignac number, because 31030230221103 - 2² = 31030230221099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31030230221103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030230223103) 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, 11440548 + ... + 13890521.

It is an arithmetic number, because the mean of its divisors is an integer number (2722076782200).

Almost surely, 2^{31030230221103} is an apocalyptic number.

31030230221103 is a deficient number, since it is larger than the sum of its proper divisors (12522998294097).

31030230221103 is a wasteful number, since it uses less digits than its factorization.

31030230221103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25352582.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31030230221103 its reverse (30112203203013), we get a palindrome (61142433424116).

The spelling of 31030230221103 in words is "thirty-one trillion, thirty billion, two hundred thirty million, two hundred twenty-one thousand, one hundred three".