30963 has 4 divisors (see below), whose sum is σ = 41288. Its totient is φ = 20640.

The previous prime is 30949. The next prime is 30971. The reversal of 30963 is 36903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36903 = 3 ⋅12301.

It is not a de Polignac number, because 30963 - 2⁵ = 30931 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30963.

It is not an unprimeable number, because it can be changed into a prime (30983) 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, 5158 + ... + 5163.

It is an arithmetic number, because the mean of its divisors is an integer number (10322).

2³⁰⁹⁶³ is an apocalyptic number.

30963 is a deficient number, since it is larger than the sum of its proper divisors (10325).

30963 is a wasteful number, since it uses less digits than its factorization.

30963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10324.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 30963 is about 175.9630643061. The cubic root of 30963 is about 31.4013035823.

The spelling of 30963 in words is "thirty thousand, nine hundred sixty-three".