20031613002 has 48 divisors (see below), whose sum is σ = 45016336872. Its totient is φ = 6432393600.

The previous prime is 20031613001. The next prime is 20031613061.

20031613002 is a `hidden beast` number, since 20 + 0 + 31 + 613 + 0 + 0 + 2 = 666.

20031613002 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 18580688721 + 1450924281 = 136311^2 + 38091^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20031613001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81633 + ... + 216164.

Almost surely, 2^20031613002 is an apocalyptic number.

20031613002 is an abundant number, since it is smaller than the sum of its proper divisors (24984723870).

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

20031613002 is a wasteful number, since it uses less digits than its factorization.

20031613002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297943 (or 297940 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The spelling of 20031613002 in words is "twenty billion, thirty-one million, six hundred thirteen thousand, two".