31104143 has 8 divisors (see below), whose sum is σ = 35717760. Its totient is φ = 26533080.

The previous prime is 31104127. The next prime is 31104173. The reversal of 31104143 is 34140113.

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

It is not a de Polignac number, because 31104143 - 2⁴ = 31104127 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 (31104113) 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, 9053 + ... + 12006.

It is an arithmetic number, because the mean of its divisors is an integer number (4464720).

Almost surely, 2^31104143 is an apocalyptic number.

31104143 is a deficient number, since it is larger than the sum of its proper divisors (4613617).

31104143 is a wasteful number, since it uses less digits than its factorization.

31104143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21277.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 31104143 is about 5577.1088388160. The cubic root of 31104143 is about 314.4894492565.

Adding to 31104143 its reverse (34140113), we get a palindrome (65244256).

The spelling of 31104143 in words is "thirty-one million, one hundred four thousand, one hundred forty-three".