2031002001 has 12 divisors (see below), whose sum is σ = 3352765312. Its totient is φ = 1160572536.

The previous prime is 2031001993. The next prime is 2031002003. The reversal of 2031002001 is 1002001302.

It is a happy number.

It is not a de Polignac number, because 2031002001 - 2³ = 2031001993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031002003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16119001 + ... + 16119126.

Almost surely, 2^2031002001 is an apocalyptic number.

2031002001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2031002001 is a deficient number, since it is larger than the sum of its proper divisors (1321763311).

2031002001 is a wasteful number, since it uses less digits than its factorization.

2031002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32238140 (or 32238137 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2031002001 is about 45066.6395574376. The cubic root of 2031002001 is about 1266.3977116480.

Adding to 2031002001 its reverse (1002001302), we get a palindrome (3033003303).

The spelling of 2031002001 in words is "two billion, thirty-one million, two thousand, one".