396131 has 4 divisors (see below), whose sum is σ = 417000. Its totient is φ = 375264.

The previous prime is 396119. The next prime is 396157. The reversal of 396131 is 131693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131693 = 79 ⋅1667.

It is a cyclic number.

It is not a de Polignac number, because 396131 - 2¹⁰ = 395107 is a prime.

It is a super-2 number, since 2×396131² = 313839538322, 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 = 396097 and 396106.

It is not an unprimeable number, because it can be changed into a prime (396181) 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, 10406 + ... + 10443.

It is an arithmetic number, because the mean of its divisors is an integer number (104250).

2³⁹⁶¹³¹ is an apocalyptic number.

396131 is a deficient number, since it is larger than the sum of its proper divisors (20869).

396131 is a wasteful number, since it uses less digits than its factorization.

396131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20868.

The product of its digits is 486, while the sum is 23.

The square root of 396131 is about 629.3893866280. The cubic root of 396131 is about 73.4423012705.

The spelling of 396131 in words is "three hundred ninety-six thousand, one hundred thirty-one".