684023955031 has 4 divisors (see below), whose sum is σ = 684044670352. Its totient is φ = 684003239712.

The previous prime is 684023955019. The next prime is 684023955073. The reversal of 684023955031 is 130559320486.

684023955031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 684023955031 - 2¹³ = 684023946839 is a prime.

It is a super-2 number, since 2×684023955031² (a number of 24 digits) 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 (684023955431) 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, 10308051 + ... + 10374196.

It is an arithmetic number, because the mean of its divisors is an integer number (171011167588).

Almost surely, 2^684023955031 is an apocalyptic number.

684023955031 is a deficient number, since it is larger than the sum of its proper divisors (20715321).

684023955031 is a wasteful number, since it uses less digits than its factorization.

684023955031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20715320.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 684023955031 in words is "six hundred eighty-four billion, twenty-three million, nine hundred fifty-five thousand, thirty-one".