965531 has 4 divisors (see below), whose sum is σ = 1103472. Its totient is φ = 827592.

The previous prime is 965519. The next prime is 965533. The reversal of 965531 is 135569.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 965531 - 2⁶ = 965467 is a prime.

It is a super-2 number, since 2×965531² = 1864500223922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 965494 and 965503.

It is not an unprimeable number, because it can be changed into a prime (965533) 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, 68960 + ... + 68973.

It is an arithmetic number, because the mean of its divisors is an integer number (275868).

2⁹⁶⁵⁵³¹ is an apocalyptic number.

965531 is a deficient number, since it is larger than the sum of its proper divisors (137941).

965531 is a wasteful number, since it uses less digits than its factorization.

965531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137940.

The product of its digits is 4050, while the sum is 29.

The square root of 965531 is about 982.6143699336. The cubic root of 965531 is about 98.8375733329.

The spelling of 965531 in words is "nine hundred sixty-five thousand, five hundred thirty-one".