31041690 has 32 divisors (see below), whose sum is σ = 74701440. Its totient is φ = 8255424.

The previous prime is 31041613. The next prime is 31041733. The reversal of 31041690 is 9614013.

It is a super-2 number, since 2×31041690² = 1927173036112200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31041690.

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 in 15 ways as a sum of consecutive naturals, for example, 11992 + ... + 14348.

It is an arithmetic number, because the mean of its divisors is an integer number (2334420).

Almost surely, 2^31041690 is an apocalyptic number.

31041690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31041690 is an abundant number, since it is smaller than the sum of its proper divisors (43659750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31041690 is a wasteful number, since it uses less digits than its factorization.

31041690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 31041690 is about 5571.5069774703. The cubic root of 31041690 is about 314.2788238356.

The spelling of 31041690 in words is "thirty-one million, forty-one thousand, six hundred ninety".