2001231371 has 2 divisors, whose sum is σ = 2001231372. Its totient is φ = 2001231370.

The previous prime is 2001231299. The next prime is 2001231409. The reversal of 2001231371 is 1731321002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001231371 - 2¹⁴ = 2001214987 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001231671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000615685 + 1000615686.

It is an arithmetic number, because the mean of its divisors is an integer number (1000615686).

Almost surely, 2^2001231371 is an apocalyptic number.

2001231371 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001231371 is an equidigital number, since it uses as much as digits as its factorization.

2001231371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2001231371 is about 44735.1245778974. The cubic root of 2001231371 is about 1260.1795685539.

Adding to 2001231371 its reverse (1731321002), we get a palindrome (3732552373).

The spelling of 2001231371 in words is "two billion, one million, two hundred thirty-one thousand, three hundred seventy-one".