961171811 has 2 divisors, whose sum is σ = 961171812. Its totient is φ = 961171810.

The previous prime is 961171781. The next prime is 961171837. The reversal of 961171811 is 118171169.

It is a strong prime.

It is an emirp because it is prime and its reverse (118171169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 961171811 - 2²² = 956977507 is a prime.

It is a super-2 number, since 2×961171811² = 1847702500522039442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (961171511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480585905 + 480585906.

It is an arithmetic number, because the mean of its divisors is an integer number (480585906).

Almost surely, 2^961171811 is an apocalyptic number.

961171811 is a deficient number, since it is larger than the sum of its proper divisors (1).

961171811 is an equidigital number, since it uses as much as digits as its factorization.

961171811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 35.

The square root of 961171811 is about 31002.7710213136. The cubic root of 961171811 is about 986.8860463128.

The spelling of 961171811 in words is "nine hundred sixty-one million, one hundred seventy-one thousand, eight hundred eleven".