2021773023 has 6 divisors (see below), whose sum is σ = 2920338824. Its totient is φ = 1347848676.

The previous prime is 2021773021. The next prime is 2021773031. The reversal of 2021773023 is 3203771202.

It is a happy number.

It is not a de Polignac number, because 2021773023 - 2¹ = 2021773021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021773021) 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, 112320715 + ... + 112320732.

Almost surely, 2^2021773023 is an apocalyptic number.

2021773023 is a deficient number, since it is larger than the sum of its proper divisors (898565801).

2021773023 is a wasteful number, since it uses less digits than its factorization.

2021773023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224641453 (or 224641450 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 2021773023 is about 44964.1304041344. The cubic root of 2021773023 is about 1264.4766066311.

The spelling of 2021773023 in words is "two billion, twenty-one million, seven hundred seventy-three thousand, twenty-three".