20031130331213 has 8 divisors (see below), whose sum is σ = 21209488996608. Its totient is φ = 18852777985984.

The previous prime is 20031130331183. The next prime is 20031130331263. The reversal of 20031130331213 is 31213303113002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20031130331213 - 2²² = 20031126136909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031130331263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5978270 + ... + 8706432.

It is an arithmetic number, because the mean of its divisors is an integer number (2651186124576).

Almost surely, 2^{20031130331213} is an apocalyptic number.

It is an amenable number.

20031130331213 is a deficient number, since it is larger than the sum of its proper divisors (1178358665395).

20031130331213 is a wasteful number, since it uses less digits than its factorization.

20031130331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160083.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 20031130331213 its reverse (31213303113002), we get a palindrome (51244433444215).

The spelling of 20031130331213 in words is "twenty trillion, thirty-one billion, one hundred thirty million, three hundred thirty-one thousand, two hundred thirteen".