2023385781 has 16 divisors (see below), whose sum is σ = 2860812864. Its totient is φ = 1267678464.

The previous prime is 2023385773. The next prime is 2023385807. The reversal of 2023385781 is 1875833202.

It is not a de Polignac number, because 2023385781 - 2³ = 2023385773 is a prime.

It is a super-2 number, since 2×2023385781² = 8188180037505959922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023381781) 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, 5226 + ... + 63828.

It is an arithmetic number, because the mean of its divisors is an integer number (178800804).

Almost surely, 2^2023385781 is an apocalyptic number.

It is an amenable number.

2023385781 is a deficient number, since it is larger than the sum of its proper divisors (837427083).

2023385781 is a wasteful number, since it uses less digits than its factorization.

2023385781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59300.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 2023385781 is about 44982.0606575555. The cubic root of 2023385781 is about 1264.8127394438.

The spelling of 2023385781 in words is "two billion, twenty-three million, three hundred eighty-five thousand, seven hundred eighty-one".