31411 has 4 divisors (see below), whose sum is σ = 31824. Its totient is φ = 31000.

The previous prime is 31397. The next prime is 31469. The reversal of 31411 is 11413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11413 = 101 ⋅113.

It is a cyclic number.

It is not a de Polignac number, because 31411 - 2⁵ = 31379 is a prime.

It is a Duffinian number.

31411 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (31481) 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, 55 + ... + 256.

It is an arithmetic number, because the mean of its divisors is an integer number (7956).

2³¹⁴¹¹ is an apocalyptic number.

31411 is a deficient number, since it is larger than the sum of its proper divisors (413).

31411 is a wasteful number, since it uses less digits than its factorization.

31411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412.

The product of its digits is 12, while the sum is 10.

The square root of 31411 is about 177.2314870445. The cubic root of 31411 is about 31.5520262277.

Adding to 31411 its reverse (11413), we get a palindrome (42824).

It can be divided in two parts, 314 and 11, that added together give a triangular number (325 = T₂₅).

The spelling of 31411 in words is "thirty-one thousand, four hundred eleven".