31103893 has 8 divisors (see below), whose sum is σ = 33203520. Its totient is φ = 29050560.

The previous prime is 31103887. The next prime is 31103909. The reversal of 31103893 is 39830113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31103893 - 2⁵ = 31103861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10180 + ... + 12877.

It is an arithmetic number, because the mean of its divisors is an integer number (4150440).

Almost surely, 2^31103893 is an apocalyptic number.

It is an amenable number.

31103893 is a deficient number, since it is larger than the sum of its proper divisors (2099627).

31103893 is a wasteful number, since it uses less digits than its factorization.

31103893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23147.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 31103893 is about 5577.0864257245. The cubic root of 31103893 is about 314.4886066831.

The spelling of 31103893 in words is "thirty-one million, one hundred three thousand, eight hundred ninety-three".