31463 has 4 divisors (see below), whose sum is σ = 31968. Its totient is φ = 30960.

The previous prime is 31397. The next prime is 31469. The reversal of 31463 is 36413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36413 = 13 ⋅2801.

It is a cyclic number.

It is not a de Polignac number, because 31463 - 2¹² = 27367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143 + ... + 288.

It is an arithmetic number, because the mean of its divisors is an integer number (7992).

2³¹⁴⁶³ is an apocalyptic number.

31463 is a deficient number, since it is larger than the sum of its proper divisors (505).

31463 is an equidigital number, since it uses as much as digits as its factorization.

31463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504.

The product of its digits is 216, while the sum is 17.

The square root of 31463 is about 177.3781271747. The cubic root of 31463 is about 31.5694277836.

Adding to 31463 its reverse (36413), we get a palindrome (67876).

Subtracting 31463 from its reverse (36413), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 31 and 463, that added together give a palindrome (494).

The spelling of 31463 in words is "thirty-one thousand, four hundred sixty-three".