391130 has 8 divisors (see below), whose sum is σ = 704052. Its totient is φ = 156448.

The previous prime is 391117. The next prime is 391133. The reversal of 391130 is 31193.

It can be written as a sum of positive squares in 2 ways, for example, as 361201 + 29929 = 601^2 + 173^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 391099 and 391108.

It is not an unprimeable number, because it can be changed into a prime (391133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19547 + ... + 19566.

2³⁹¹¹³⁰ is an apocalyptic number.

391130 is a deficient number, since it is larger than the sum of its proper divisors (312922).

391130 is a wasteful number, since it uses less digits than its factorization.

391130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39120.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 391130 is about 625.4038695115. The cubic root of 391130 is about 73.1319313078.

The spelling of 391130 in words is "three hundred ninety-one thousand, one hundred thirty".