2131543204040 has 32 divisors (see below), whose sum is σ = 5004492742080. Its totient is φ = 815546964672.

The previous prime is 2131543204031. The next prime is 2131543204061. The reversal of 2131543204040 is 404023451312.

It is a junction number, because it is equal to n+sod(n) for n = 2131543203994 and 2131543204012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158446474 + ... + 1158448313.

It is an arithmetic number, because the mean of its divisors is an integer number (156390398190).

Almost surely, 2^{2131543204040} is an apocalyptic number.

2131543204040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131543204040 is an abundant number, since it is smaller than the sum of its proper divisors (2872949538040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131543204040 is a wasteful number, since it uses less digits than its factorization.

2131543204040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316894821 (or 2316894817 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 2131543204040 its reverse (404023451312), we get a palindrome (2535566655352).

The spelling of 2131543204040 in words is "two trillion, one hundred thirty-one billion, five hundred forty-three million, two hundred four thousand, forty".