683399431 has 16 divisors (see below), whose sum is σ = 810841248. Its totient is φ = 567792000.

The previous prime is 683399407. The next prime is 683399443. The reversal of 683399431 is 134993386.

It is a cyclic number.

It is not a de Polignac number, because 683399431 - 2²⁵ = 649844999 is a prime.

It is a super-2 number, since 2×683399431² = 934069564582247522, 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 (683399131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9216 + ... + 38101.

It is an arithmetic number, because the mean of its divisors is an integer number (50677578).

Almost surely, 2^683399431 is an apocalyptic number.

683399431 is a deficient number, since it is larger than the sum of its proper divisors (127441817).

683399431 is a wasteful number, since it uses less digits than its factorization.

683399431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47442.

The product of its digits is 419904, while the sum is 46.

The square root of 683399431 is about 26141.9094750173. The cubic root of 683399431 is about 880.8288639419.

The spelling of 683399431 in words is "six hundred eighty-three million, three hundred ninety-nine thousand, four hundred thirty-one".