31441 has 4 divisors (see below), whose sum is σ = 32832. Its totient is φ = 30052.

The previous prime is 31397. The next prime is 31469. The reversal of 31441 is 14413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31441 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 8.

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, 661 + ... + 706.

It is an arithmetic number, because the mean of its divisors is an integer number (8208).

2³¹⁴⁴¹ is an apocalyptic number.

It is an amenable number.

31441 is a deficient number, since it is larger than the sum of its proper divisors (1391).

31441 is a wasteful number, since it uses less digits than its factorization.

31441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390.

The product of its digits is 48, while the sum is 13.

The square root of 31441 is about 177.3161019197. The cubic root of 31441 is about 31.5620679286.

Adding to 31441 its reverse (14413), we get a palindrome (45854).

It can be divided in two parts, 3 and 1441, that added together give a square (1444 = 38²).

The spelling of 31441 in words is "thirty-one thousand, four hundred forty-one".