2378640231 has 24 divisors (see below), whose sum is σ = 3804113664. Its totient is φ = 1420079760.

The previous prime is 2378640227. The next prime is 2378640263. The reversal of 2378640231 is 1320468732.

It is a happy number.

2378640231 is a `hidden beast` number, since 2 + 3 + 7 + 8 + 640 + 2 + 3 + 1 = 666.

It is not a de Polignac number, because 2378640231 - 2² = 2378640227 is a prime.

It is a super-2 number, since 2×2378640231² = 11315858697063466722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378640211) 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, 172671 + ... + 185936.

It is an arithmetic number, because the mean of its divisors is an integer number (158504736).

Almost surely, 2^2378640231 is an apocalyptic number.

2378640231 is a deficient number, since it is larger than the sum of its proper divisors (1425473433).

2378640231 is a wasteful number, since it uses less digits than its factorization.

2378640231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358691 (or 358688 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 2378640231 is about 48771.3054059454. The cubic root of 2378640231 is about 1334.8821324208.

It can be divided in two parts, 237 and 8640231, that added together give a palindrome (8640468).

The spelling of 2378640231 in words is "two billion, three hundred seventy-eight million, six hundred forty thousand, two hundred thirty-one".