30965 has 8 divisors (see below), whose sum is σ = 40608. Its totient is φ = 22480.

The previous prime is 30949. The next prime is 30971. The reversal of 30965 is 56903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30965 - 2⁴ = 30949 is a prime.

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 self number, because there is not a number n which added to its sum of digits gives 30965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227 + ... + 336.

It is an arithmetic number, because the mean of its divisors is an integer number (5076).

2³⁰⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

30965 is a deficient number, since it is larger than the sum of its proper divisors (9643).

30965 is a wasteful number, since it uses less digits than its factorization.

30965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 30965 is about 175.9687472252. The cubic root of 30965 is about 31.4019796715.

The spelling of 30965 in words is "thirty thousand, nine hundred sixty-five".