2001130931 has 2 divisors, whose sum is σ = 2001130932. Its totient is φ = 2001130930.

The previous prime is 2001130921. The next prime is 2001131023. The reversal of 2001130931 is 1390311002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001130931 - 2⁶ = 2001130867 is a prime.

It is a super-2 number, since 2×2001130931² = 8009050006009853522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2001130921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000565465 + 1000565466.

It is an arithmetic number, because the mean of its divisors is an integer number (1000565466).

Almost surely, 2^2001130931 is an apocalyptic number.

2001130931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001130931 is an equidigital number, since it uses as much as digits as its factorization.

2001130931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 2001130931 is about 44734.0019560066. The cubic root of 2001130931 is about 1260.1584857754.

Adding to 2001130931 its reverse (1390311002), we get a palindrome (3391441933).

The spelling of 2001130931 in words is "two billion, one million, one hundred thirty thousand, nine hundred thirty-one".