2001203257 has 2 divisors, whose sum is σ = 2001203258. Its totient is φ = 2001203256.

The previous prime is 2001203227. The next prime is 2001203287. The reversal of 2001203257 is 7523021002.

It is a balanced prime because it is at equal distance from previous prime (2001203227) and next prime (2001203287).

It can be written as a sum of positive squares in only one way, i.e., 1955762176 + 45441081 = 44224^2 + 6741^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001203257 - 2¹⁵ = 2001170489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001203227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000601628 + 1000601629.

It is an arithmetic number, because the mean of its divisors is an integer number (1000601629).

Almost surely, 2^2001203257 is an apocalyptic number.

It is an amenable number.

2001203257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001203257 is an equidigital number, since it uses as much as digits as its factorization.

2001203257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 2001203257 is about 44734.8103494359. The cubic root of 2001203257 is about 1260.1736673781.

Adding to 2001203257 its reverse (7523021002), we get a palindrome (9524224259).

The spelling of 2001203257 in words is "two billion, one million, two hundred three thousand, two hundred fifty-seven".