2000011931 has 2 divisors, whose sum is σ = 2000011932. Its totient is φ = 2000011930.

The previous prime is 2000011919. The next prime is 2000011933. The reversal of 2000011931 is 1391100002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2000011931 - 2²⁶ = 1932903067 is a prime.

It is a super-2 number, since 2×2000011931² = 8000095448284697522, which contains 22 as substring.

Together with 2000011933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2000011933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000005965 + 1000005966.

It is an arithmetic number, because the mean of its divisors is an integer number (1000005966).

Almost surely, 2^2000011931 is an apocalyptic number.

2000011931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000011931 is an equidigital number, since it uses as much as digits as its factorization.

2000011931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 2000011931 is about 44721.4929424321. The cubic root of 2000011931 is about 1259.9235552429.

Adding to 2000011931 its reverse (1391100002), we get a palindrome (3391111933).

The spelling of 2000011931 in words is "two billion, eleven thousand, nine hundred thirty-one".