2400216831 has 24 divisors (see below), whose sum is σ = 3505417344. Its totient is φ = 1582457040.

The previous prime is 2400216827. The next prime is 2400216853. The reversal of 2400216831 is 1386120042.

It is not a de Polignac number, because 2400216831 - 2² = 2400216827 is a prime.

It is a super-2 number, since 2×2400216831² = 11522081671631365122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2400216795 and 2400216804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400216031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 663630 + ... + 667236.

It is an arithmetic number, because the mean of its divisors is an integer number (146059056).

Almost surely, 2^2400216831 is an apocalyptic number.

2400216831 is a deficient number, since it is larger than the sum of its proper divisors (1105200513).

2400216831 is a wasteful number, since it uses less digits than its factorization.

2400216831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411 (or 4408 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2400216831 is about 48992.0078278080. The cubic root of 2400216831 is about 1338.9062194546.

Adding to 2400216831 its reverse (1386120042), we get a palindrome (3786336873).

The spelling of 2400216831 in words is "two billion, four hundred million, two hundred sixteen thousand, eight hundred thirty-one".