2023212440 has 32 divisors (see below), whose sum is σ = 4565155680. Its totient is φ = 806986752.

The previous prime is 2023212439. The next prime is 2023212509. The reversal of 2023212440 is 442123202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57524 + ... + 85763.

It is an arithmetic number, because the mean of its divisors is an integer number (142661115).

Almost surely, 2^2023212440 is an apocalyptic number.

2023212440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2023212440 is an abundant number, since it is smaller than the sum of its proper divisors (2541943240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2023212440 is a wasteful number, since it uses less digits than its factorization.

2023212440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143651 (or 143647 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2023212440 is about 44980.1338370619. The cubic root of 2023212440 is about 1264.7766200891.

Adding to 2023212440 its reverse (442123202), we get a palindrome (2465335642).

The spelling of 2023212440 in words is "two billion, twenty-three million, two hundred twelve thousand, four hundred forty".