20130243354331 has 4 divisors (see below), whose sum is σ = 21960265477464. Its totient is φ = 18300221231200.

The previous prime is 20130243354329. The next prime is 20130243354373. The reversal of 20130243354331 is 13345334203102.

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

It is a cyclic number.

It is not a de Polignac number, because 20130243354331 - 2¹ = 20130243354329 is a prime.

It is a super-2 number, since 2×20130243354331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20130243354931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915011061550 + ... + 915011061571.

It is an arithmetic number, because the mean of its divisors is an integer number (5490066369366).

Almost surely, 2^{20130243354331} is an apocalyptic number.

20130243354331 is a deficient number, since it is larger than the sum of its proper divisors (1830022123133).

20130243354331 is a wasteful number, since it uses less digits than its factorization.

20130243354331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830022123132.

The product of its (nonzero) digits is 77760, while the sum is 34.

Adding to 20130243354331 its reverse (13345334203102), we get a palindrome (33475577557433).

The spelling of 20130243354331 in words is "twenty trillion, one hundred thirty billion, two hundred forty-three million, three hundred fifty-four thousand, three hundred thirty-one".