2643678031 has 8 divisors (see below), whose sum is σ = 2809838720. Its totient is φ = 2480219352.

The previous prime is 2643678017. The next prime is 2643678139. The reversal of 2643678031 is 1308763462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2643678031 - 2⁵ = 2643677999 is a prime.

It is a super-2 number, since 2×2643678031² = 13978067063184073922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643670031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673485 + ... + 677398.

It is an arithmetic number, because the mean of its divisors is an integer number (351229840).

Almost surely, 2^2643678031 is an apocalyptic number.

2643678031 is a deficient number, since it is larger than the sum of its proper divisors (166160689).

2643678031 is a wasteful number, since it uses less digits than its factorization.

2643678031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351005.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 2643678031 is about 51416.7096477400. The cubic root of 2643678031 is about 1382.7261853079.

The spelling of 2643678031 in words is "two billion, six hundred forty-three million, six hundred seventy-eight thousand, thirty-one".