31125056 has 14 divisors (see below), whose sum is σ = 61763910. Its totient is φ = 15562496.

The previous prime is 31125047. The next prime is 31125071. The reversal of 31125056 is 65052113.

It can be written as a sum of positive squares in only one way, i.e., 26214400 + 4910656 = 5120^2 + 2216^2 .

It is a super-2 number, since 2×31125056² = 1937538222006272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243101 + ... + 243228.

Almost surely, 2^31125056 is an apocalyptic number.

It is an amenable number.

31125056 is a deficient number, since it is larger than the sum of its proper divisors (30638854).

31125056 is an equidigital number, since it uses as much as digits as its factorization.

31125056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486341 (or 486331 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 31125056 is about 5578.9834199431. The cubic root of 31125056 is about 314.5599162293.

Adding to 31125056 its reverse (65052113), we get a palindrome (96177169).

The spelling of 31125056 in words is "thirty-one million, one hundred twenty-five thousand, fifty-six".