961965313 has 4 divisors (see below), whose sum is σ = 962027440. Its totient is φ = 961903188.

The previous prime is 961965299. The next prime is 961965373. The reversal of 961965313 is 313569169.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961965313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 961965313.

It is not an unprimeable number, because it can be changed into a prime (961965373) 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, 12958 + ... + 45736.

It is an arithmetic number, because the mean of its divisors is an integer number (240506860).

Almost surely, 2^961965313 is an apocalyptic number.

It is an amenable number.

961965313 is a deficient number, since it is larger than the sum of its proper divisors (62127).

961965313 is a wasteful number, since it uses less digits than its factorization.

961965313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62126.

The product of its digits is 131220, while the sum is 43.

The square root of 961965313 is about 31015.5656566183. The cubic root of 961965313 is about 987.1575484677.

The spelling of 961965313 in words is "nine hundred sixty-one million, nine hundred sixty-five thousand, three hundred thirteen".