394131 has 8 divisors (see below), whose sum is σ = 532480. Its totient is φ = 259272.

The previous prime is 394129. The next prime is 394153. The reversal of 394131 is 131493.

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

It is not a de Polignac number, because 394131 - 2¹ = 394129 is a prime.

It is a super-2 number, since 2×394131² = 310678490322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 394098 and 394107.

It is not an unprimeable number, because it can be changed into a prime (394631) 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, 595 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (66560).

2³⁹⁴¹³¹ is an apocalyptic number.

394131 is a deficient number, since it is larger than the sum of its proper divisors (138349).

394131 is a wasteful number, since it uses less digits than its factorization.

394131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745.

The product of its digits is 324, while the sum is 21.

The square root of 394131 is about 627.7985345634. The cubic root of 394131 is about 73.3184933240.

It can be divided in two parts, 394 and 131, that added together give a palindrome (525).

The spelling of 394131 in words is "three hundred ninety-four thousand, one hundred thirty-one".