20231000001 has 6 divisors (see below), whose sum is σ = 29222555570. Its totient is φ = 13487333328.

The previous prime is 20230999973. The next prime is 20231000003. The reversal of 20231000001 is 10000013202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19986890625 + 244109376 = 141375^2 + 15624^2 .

It is not a de Polignac number, because 20231000001 - 2⁵ = 20230999969 is a prime.

It is a super-2 number, since 2×20231000001² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2247888889 = 20231000001 / (2 + 0 + 2 + 3 + 1 + 0 + 0 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20231000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1123944436 + ... + 1123944453.

Almost surely, 2^20231000001 is an apocalyptic number.

It is an amenable number.

20231000001 is a deficient number, since it is larger than the sum of its proper divisors (8991555569).

20231000001 is a wasteful number, since it uses less digits than its factorization.

20231000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247888895 (or 2247888892 counting only the distinct ones).

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

Adding to 20231000001 its reverse (10000013202), we get a palindrome (30231013203).

The spelling of 20231000001 in words is "twenty billion, two hundred thirty-one million, one", and thus it is an aban number.