684035031 has 4 divisors (see below), whose sum is σ = 912046712. Its totient is φ = 456023352.

The previous prime is 684035003. The next prime is 684035047. The reversal of 684035031 is 130530486.

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

It is not a de Polignac number, because 684035031 - 2⁵ = 684034999 is a prime.

It is a super-2 number, since 2×684035031² = 935807847270341922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 684035031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684035831) 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, 114005836 + ... + 114005841.

It is an arithmetic number, because the mean of its divisors is an integer number (228011678).

Almost surely, 2^684035031 is an apocalyptic number.

684035031 is a deficient number, since it is larger than the sum of its proper divisors (228011681).

684035031 is a wasteful number, since it uses less digits than its factorization.

684035031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228011680.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 684035031 is about 26154.0633745504. The cubic root of 684035031 is about 881.1018528288.

The spelling of 684035031 in words is "six hundred eighty-four million, thirty-five thousand, thirty-one".