2031267678 has 64 divisors (see below), whose sum is σ = 4896640512. Its totient is φ = 554132480.

The previous prime is 2031267643. The next prime is 2031267683. The reversal of 2031267678 is 8767621302.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13551 + ... + 65162.

It is an arithmetic number, because the mean of its divisors is an integer number (76510008).

Almost surely, 2^2031267678 is an apocalyptic number.

2031267678 is an abundant number, since it is smaller than the sum of its proper divisors (2865372834).

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

2031267678 is a wasteful number, since it uses less digits than its factorization.

2031267678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78769.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 2031267678 is about 45069.5870626745. The cubic root of 2031267678 is about 1266.4529287403.

It can be divided in two parts, 20312 and 67678, that added together give a triangular number (87990 = T₄₁₉).

The spelling of 2031267678 in words is "two billion, thirty-one million, two hundred sixty-seven thousand, six hundred seventy-eight".