20131313002 has 4 divisors (see below), whose sum is σ = 30196969506. Its totient is φ = 10065656500.

The previous prime is 20131312997. The next prime is 20131313047. The reversal of 20131313002 is 20031313102.

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

It can be written as a sum of positive squares in only one way, i.e., 14421848281 + 5709464721 = 120091^2 + 75561^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5032828249 + ... + 5032828252.

Almost surely, 2^20131313002 is an apocalyptic number.

20131313002 is a deficient number, since it is larger than the sum of its proper divisors (10065656504).

20131313002 is a wasteful number, since it uses less digits than its factorization.

20131313002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10065656503.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20131313002 its reverse (20031313102), we get a palindrome (40162626104).

The spelling of 20131313002 in words is "twenty billion, one hundred thirty-one million, three hundred thirteen thousand, two".