20000031001 has 4 divisors (see below), whose sum is σ = 20059378612. Its totient is φ = 19940683392.

The previous prime is 20000030977. The next prime is 20000031011. The reversal of 20000031001 is 10013000002.

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 2720665600 + 17279365401 = 52160^2 + 131451^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000031001 - 2¹⁵ = 19999998233 is a prime.

It is a super-2 number, since 2×20000031001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000031011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29673300 + ... + 29673973.

It is an arithmetic number, because the mean of its divisors is an integer number (5014844653).

Almost surely, 2^20000031001 is an apocalyptic number.

It is an amenable number.

20000031001 is a deficient number, since it is larger than the sum of its proper divisors (59347611).

20000031001 is an equidigital number, since it uses as much as digits as its factorization.

20000031001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59347610.

The product of its (nonzero) digits is 6, while the sum is 7.

Adding to 20000031001 its reverse (10013000002), we get a palindrome (30013031003).

The spelling of 20000031001 in words is "twenty billion, thirty-one thousand, one".