31030002001 has 4 divisors (see below), whose sum is σ = 32100002100. Its totient is φ = 29960001904.

The previous prime is 31030001987. The next prime is 31030002041. The reversal of 31030002001 is 10020003013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22052250000 + 8977752001 = 148500^2 + 94751^2 .

It is a cyclic number.

It is not a de Polignac number, because 31030002001 - 2⁵ = 31030001969 is a prime.

It is a super-2 number, since 2×31030002001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31030002041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535000006 + ... + 535000063.

It is an arithmetic number, because the mean of its divisors is an integer number (8025000525).

Almost surely, 2^31030002001 is an apocalyptic number.

It is an amenable number.

31030002001 is a deficient number, since it is larger than the sum of its proper divisors (1070000099).

31030002001 is a wasteful number, since it uses less digits than its factorization.

31030002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070000098.

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 31030002001 its reverse (10020003013), we get a palindrome (41050005014).

The spelling of 31030002001 in words is "thirty-one billion, thirty million, two thousand, one".