2686693431 has 4 divisors (see below), whose sum is σ = 3582257912. Its totient is φ = 1791128952.

The previous prime is 2686693397. The next prime is 2686693433. The reversal of 2686693431 is 1343966862.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2686693431 - 2¹¹ = 2686691383 is a prime.

It is a super-4 number, since 4×2686693431⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686693433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447782236 + ... + 447782241.

It is an arithmetic number, because the mean of its divisors is an integer number (895564478).

Almost surely, 2^2686693431 is an apocalyptic number.

2686693431 is a deficient number, since it is larger than the sum of its proper divisors (895564481).

2686693431 is an equidigital number, since it uses as much as digits as its factorization.

2686693431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895564480.

The product of its digits is 1119744, while the sum is 48.

The square root of 2686693431 is about 51833.3235573410. The cubic root of 2686693431 is about 1390.1853402602.

The spelling of 2686693431 in words is "two billion, six hundred eighty-six million, six hundred ninety-three thousand, four hundred thirty-one".