2031123020123 has 2 divisors, whose sum is σ = 2031123020124. Its totient is φ = 2031123020122.

The previous prime is 2031123020117. The next prime is 2031123020197. The reversal of 2031123020123 is 3210203211302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2031123020123 - 2⁴ = 2031123020107 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2031123020095 and 2031123020104.

It is not a weakly prime, because it can be changed into another prime (2031123025123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015561510061 + 1015561510062.

It is an arithmetic number, because the mean of its divisors is an integer number (1015561510062).

Almost surely, 2^{2031123020123} is an apocalyptic number.

2031123020123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031123020123 is an equidigital number, since it uses as much as digits as its factorization.

2031123020123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2031123020123 its reverse (3210203211302), we get a palindrome (5241326231425).

The spelling of 2031123020123 in words is "two trillion, thirty-one billion, one hundred twenty-three million, twenty thousand, one hundred twenty-three".