31430586644 has 12 divisors (see below), whose sum is σ = 55032382944. Its totient is φ = 15707048664.

The previous prime is 31430586643. The next prime is 31430586653. The reversal of 31430586644 is 44668503413.

It is a junction number, because it is equal to n+sod(n) for n = 31430586595 and 31430586604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430586643) 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, 2052584 + ... + 2067839.

It is an arithmetic number, because the mean of its divisors is an integer number (4586031912).

Almost surely, 2^31430586644 is an apocalyptic number.

It is an amenable number.

31430586644 is a deficient number, since it is larger than the sum of its proper divisors (23601796300).

31430586644 is a wasteful number, since it uses less digits than its factorization.

31430586644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122334 (or 4122332 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 31430586644 in words is "thirty-one billion, four hundred thirty million, five hundred eighty-six thousand, six hundred forty-four".