31130367844 has 27 divisors (see below), whose sum is σ = 55691585593. Its totient is φ = 15225893648.

The previous prime is 31130367769. The next prime is 31130367881. The reversal of 31130367844 is 44876303113.

The square root of 31130367844 is 176438.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 19485368100 + 11644999744 = 139590^2 + 107912^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31130367797 and 31130367806.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16584234 + ... + 16586110.

Almost surely, 2^31130367844 is an apocalyptic number.

31130367844 is the 176438-th square number.

It is an amenable number.

31130367844 is a deficient number, since it is larger than the sum of its proper divisors (24561217749).

31130367844 is an frugal number, since it uses more digits than its factorization.

31130367844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852 (or 1926 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 31130367844 in words is "thirty-one billion, one hundred thirty million, three hundred sixty-seven thousand, eight hundred forty-four".