2002686431 has 4 divisors (see below), whose sum is σ = 2108091000. Its totient is φ = 1897281864.

The previous prime is 2002686359. The next prime is 2002686467. The reversal of 2002686431 is 1346862002.

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

It is a cyclic number.

It is not a de Polignac number, because 2002686431 - 2¹⁰ = 2002685407 is a prime.

It is a super-2 number, since 2×2002686431² = 8021505881823035522, 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 (2002686331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52702256 + ... + 52702293.

It is an arithmetic number, because the mean of its divisors is an integer number (527022750).

Almost surely, 2^2002686431 is an apocalyptic number.

2002686431 is a deficient number, since it is larger than the sum of its proper divisors (105404569).

2002686431 is a wasteful number, since it uses less digits than its factorization.

2002686431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105404568.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 2002686431 is about 44751.3846824878. The cubic root of 2002686431 is about 1260.4849126681.

The spelling of 2002686431 in words is "two billion, two million, six hundred eighty-six thousand, four hundred thirty-one".