2003959778131 has 4 divisors (see below), whose sum is σ = 2003983136064. Its totient is φ = 2003936420200.

The previous prime is 2003959778033. The next prime is 2003959778143. The reversal of 2003959778131 is 1318779593002.

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 2003959778131 - 2¹⁷ = 2003959647059 is a prime.

It is a super-3 number, since 3×2003959778131³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003959778731) 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, 11549800 + ... + 11722021.

It is an arithmetic number, because the mean of its divisors is an integer number (500995784016).

Almost surely, 2^{2003959778131} is an apocalyptic number.

2003959778131 is a deficient number, since it is larger than the sum of its proper divisors (23357933).

2003959778131 is an equidigital number, since it uses as much as digits as its factorization.

2003959778131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23357932.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 2003959778131 in words is "two trillion, three billion, nine hundred fifty-nine million, seven hundred seventy-eight thousand, one hundred thirty-one".