2031121023 has 16 divisors (see below), whose sum is σ = 2809737216. Its totient is φ = 1303737120.

The previous prime is 2031121021. The next prime is 2031121051. The reversal of 2031121023 is 3201211302.

It is not a de Polignac number, because 2031121023 - 2¹ = 2031121021 is a prime.

It is a super-2 number, since 2×2031121023² = 8250905220145133058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2031120993 and 2031121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031121021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37111 + ... + 73752.

It is an arithmetic number, because the mean of its divisors is an integer number (175608576).

Almost surely, 2^2031121023 is an apocalyptic number.

2031121023 is a deficient number, since it is larger than the sum of its proper divisors (778616193).

2031121023 is a wasteful number, since it uses less digits than its factorization.

2031121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111094.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2031121023 is about 45067.9600492412. The cubic root of 2031121023 is about 1266.4224492314.

Adding to 2031121023 its reverse (3201211302), we get a palindrome (5232332325).

The spelling of 2031121023 in words is "two billion, thirty-one million, one hundred twenty-one thousand, twenty-three".