2001311929 has 2 divisors, whose sum is σ = 2001311930. Its totient is φ = 2001311928.

The previous prime is 2001311899. The next prime is 2001311941. The reversal of 2001311929 is 9291131002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1993443904 + 7868025 = 44648^2 + 2805^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001311929 - 2²³ = 1992923321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001311897 and 2001311906.

It is not a weakly prime, because it can be changed into another prime (2001311129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000655964 + 1000655965.

It is an arithmetic number, because the mean of its divisors is an integer number (1000655965).

Almost surely, 2^2001311929 is an apocalyptic number.

It is an amenable number.

2001311929 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001311929 is an equidigital number, since it uses as much as digits as its factorization.

2001311929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 2001311929 is about 44736.0249575217. The cubic root of 2001311929 is about 1260.1964775072.

The spelling of 2001311929 in words is "two billion, one million, three hundred eleven thousand, nine hundred twenty-nine".