961333111 has 2 divisors, whose sum is σ = 961333112. Its totient is φ = 961333110.

The previous prime is 961333103. The next prime is 961333123. The reversal of 961333111 is 111333169.

It is a weak prime.

It is an emirp because it is prime and its reverse (111333169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 961333111 - 2³ = 961333103 is a prime.

It is a super-2 number, since 2×961333111² = 1848322700609876642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 961333111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961333511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480666555 + 480666556.

It is an arithmetic number, because the mean of its divisors is an integer number (480666556).

Almost surely, 2^961333111 is an apocalyptic number.

961333111 is a deficient number, since it is larger than the sum of its proper divisors (1).

961333111 is an equidigital number, since it uses as much as digits as its factorization.

961333111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458, while the sum is 28.

The square root of 961333111 is about 31005.3722925560. The cubic root of 961333111 is about 986.9412483117.

It can be divided in two parts, 9613 and 33111, that added together give a palindrome (42724).

The spelling of 961333111 in words is "nine hundred sixty-one million, three hundred thirty-three thousand, one hundred eleven".