391102 has 8 divisors (see below), whose sum is σ = 621216. Its totient is φ = 184032.

The previous prime is 391073. The next prime is 391103. The reversal of 391102 is 201193.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391103) by changing a digit.

391102 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5718 + ... + 5785.

It is an arithmetic number, because the mean of its divisors is an integer number (77652).

2³⁹¹¹⁰² is an apocalyptic number.

391102 is a deficient number, since it is larger than the sum of its proper divisors (230114).

391102 is a wasteful number, since it uses less digits than its factorization.

391102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11522.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 391102 is about 625.3814835762. The cubic root of 391102 is about 73.1301861566.

Adding to 391102 its reverse (201193), we get a palindrome (592295).

The spelling of 391102 in words is "three hundred ninety-one thousand, one hundred two".