2011307961 has 16 divisors (see below), whose sum is σ = 3057917184. Its totient is φ = 1164920064.

The previous prime is 2011307917. The next prime is 2011307981. The reversal of 2011307961 is 1697031102.

It is not a de Polignac number, because 2011307961 - 2⁶ = 2011307897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2011307981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1516161 + ... + 1517486.

It is an arithmetic number, because the mean of its divisors is an integer number (191119824).

Almost surely, 2^2011307961 is an apocalyptic number.

It is an amenable number.

2011307961 is a deficient number, since it is larger than the sum of its proper divisors (1046609223).

2011307961 is a wasteful number, since it uses less digits than its factorization.

2011307961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033680.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 2011307961 is about 44847.6081970934. The cubic root of 2011307961 is about 1262.2911117460.

The spelling of 2011307961 in words is "two billion, eleven million, three hundred seven thousand, nine hundred sixty-one".