2031021001 has 2 divisors, whose sum is σ = 2031021002. Its totient is φ = 2031021000.

The previous prime is 2031020969. The next prime is 2031021037. The reversal of 2031021001 is 1001201302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1593207225 + 437813776 = 39915^2 + 20924^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031021001 - 2⁵ = 2031020969 is a prime.

It is not a weakly prime, because it can be changed into another prime (2031021071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015510500 + 1015510501.

It is an arithmetic number, because the mean of its divisors is an integer number (1015510501).

Almost surely, 2^2031021001 is an apocalyptic number.

It is an amenable number.

2031021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031021001 is an equidigital number, since it uses as much as digits as its factorization.

2031021001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2031021001 is about 45066.8503558880. The cubic root of 2031021001 is about 1266.4016606809.

Adding to 2031021001 its reverse (1001201302), we get a palindrome (3032222303).

The spelling of 2031021001 in words is "two billion, thirty-one million, twenty-one thousand, one".