31030104 has 32 divisors (see below), whose sum is σ = 88657920. Its totient is φ = 8865696.

The previous prime is 31030093. The next prime is 31030123. The reversal of 31030104 is 40103013.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 31030104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92184 + ... + 92519.

It is an arithmetic number, because the mean of its divisors is an integer number (2770560).

Almost surely, 2^31030104 is an apocalyptic number.

It is an amenable number.

31030104 is an abundant number, since it is smaller than the sum of its proper divisors (57627816).

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

31030104 is a wasteful number, since it uses less digits than its factorization.

31030104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184719 (or 184715 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 31030104 is about 5570.4671258342. The cubic root of 31030104 is about 314.2397184951.

Adding to 31030104 its reverse (40103013), we get a palindrome (71133117).

The spelling of 31030104 in words is "thirty-one million, thirty thousand, one hundred four".