31020123122203 has 16 divisors (see below), whose sum is σ = 32817724963200. Its totient is φ = 29278558108800.

The previous prime is 31020123122189. The next prime is 31020123122207. The reversal of 31020123122203 is 30222132102013.

It is a cyclic number.

It is not a de Polignac number, because 31020123122203 - 2²¹ = 31020121025051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31020123122207) 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, 66798276 + ... + 67261057.

It is an arithmetic number, because the mean of its divisors is an integer number (2051107810200).

Almost surely, 2^{31020123122203} is an apocalyptic number.

31020123122203 is a deficient number, since it is larger than the sum of its proper divisors (1797601840997).

31020123122203 is a wasteful number, since it uses less digits than its factorization.

31020123122203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134059542.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31020123122203 its reverse (30222132102013), we get a palindrome (61242255224216).

The spelling of 31020123122203 in words is "thirty-one trillion, twenty billion, one hundred twenty-three million, one hundred twenty-two thousand, two hundred three".