20131311313103 has 8 divisors (see below), whose sum is σ = 20278958044800. Its totient is φ = 19983958993368.

The previous prime is 20131311313051. The next prime is 20131311313109. The reversal of 20131311313103 is 30131311313102.

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

It is a cyclic number.

It is not a de Polignac number, because 20131311313103 - 2³⁴ = 20114131443919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131311313109) 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, 73465733 + ... + 73739246.

It is an arithmetic number, because the mean of its divisors is an integer number (2534869755600).

Almost surely, 2^{20131311313103} is an apocalyptic number.

20131311313103 is a deficient number, since it is larger than the sum of its proper divisors (147646731697).

20131311313103 is a wasteful number, since it uses less digits than its factorization.

20131311313103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147205981.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 20131311313103 its reverse (30131311313102), we get a palindrome (50262622626205).

Subtracting 20131311313103 from its reverse (30131311313102), we obtain a palindrome (9999999999999).

The spelling of 20131311313103 in words is "twenty trillion, one hundred thirty-one billion, three hundred eleven million, three hundred thirteen thousand, one hundred three".