20310001002 has 24 divisors (see below), whose sum is σ = 45194328036. Its totient is φ = 6587027136.

The previous prime is 20310001001. The next prime is 20310001003. The reversal of 20310001002 is 20010001302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20310001001) and next prime (20310001003).

It can be written as a sum of positive squares in 2 ways, for example, as 20308815081 + 1185921 = 142509^2 + 1089^2 .

It is a super-3 number, since 3×20310001002³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is not an unprimeable number, because it can be changed into a prime (20310001001) 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, 15247083 + ... + 15248414.

Almost surely, 2^20310001002 is an apocalyptic number.

20310001002 is an abundant number, since it is smaller than the sum of its proper divisors (24884327034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20310001002 is a wasteful number, since it uses less digits than its factorization.

20310001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30495542 (or 30495539 counting only the distinct ones).

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

Adding to 20310001002 its reverse (20010001302), we get a palindrome (40320002304).

The spelling of 20310001002 in words is "twenty billion, three hundred ten million, one thousand, two".