31056445 has 12 divisors (see below), whose sum is σ = 43352604. Its totient is φ = 21295680.

The previous prime is 31056437. The next prime is 31056491. The reversal of 31056445 is 54465013.

It can be written as a sum of positive squares in 2 ways, for example, as 24492601 + 6563844 = 4949^2 + 2562^2 .

It is not a de Polignac number, because 31056445 - 2³ = 31056437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63136 + ... + 63625.

It is an arithmetic number, because the mean of its divisors is an integer number (3612717).

Almost surely, 2^31056445 is an apocalyptic number.

31056445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31056445 is a deficient number, since it is larger than the sum of its proper divisors (12296159).

31056445 is a wasteful number, since it uses less digits than its factorization.

31056445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126780 (or 126773 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 31056445 is about 5572.8309681884. The cubic root of 31056445 is about 314.3286111754.

The spelling of 31056445 in words is "thirty-one million, fifty-six thousand, four hundred forty-five".