31041928 has 8 divisors (see below), whose sum is σ = 58203630. Its totient is φ = 15520960.

The previous prime is 31041911. The next prime is 31041929. The reversal of 31041928 is 82914013.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23213124 + 7828804 = 4818^2 + 2798^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 31041896 and 31041905.

It is not an unprimeable number, because it can be changed into a prime (31041929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1940113 + ... + 1940128.

Almost surely, 2^31041928 is an apocalyptic number.

It is an amenable number.

31041928 is a deficient number, since it is larger than the sum of its proper divisors (27161702).

31041928 is a wasteful number, since it uses less digits than its factorization.

31041928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880247 (or 3880243 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 31041928 is about 5571.5283361031. The cubic root of 31041928 is about 314.2796270368.

The spelling of 31041928 in words is "thirty-one million, forty-one thousand, nine hundred twenty-eight".