20131013403303 has 32 divisors (see below), whose sum is σ = 29345087987712. Its totient is φ = 12174114348000.

The previous prime is 20131013403301. The next prime is 20131013403307. The reversal of 20131013403303 is 30330431013102.

It is a happy number.

It is not a de Polignac number, because 20131013403303 - 2¹ = 20131013403301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131013403301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143781550 + ... + 143921492.

It is an arithmetic number, because the mean of its divisors is an integer number (917033999616).

Almost surely, 2^{20131013403303} is an apocalyptic number.

20131013403303 is a deficient number, since it is larger than the sum of its proper divisors (9214074584409).

20131013403303 is a wasteful number, since it uses less digits than its factorization.

20131013403303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149395.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 20131013403303 its reverse (30330431013102), we get a palindrome (50461444416405).

The spelling of 20131013403303 in words is "twenty trillion, one hundred thirty-one billion, thirteen million, four hundred three thousand, three hundred three".