2131311100333 has 4 divisors (see below), whose sum is σ = 2132854411708. Its totient is φ = 2129767788960.

The previous prime is 2131311100327. The next prime is 2131311100343. The reversal of 2131311100333 is 3330011131312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1751752837444 + 379558262889 = 1323538^2 + 616083^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131311100333 - 2⁵ = 2131311100301 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 (2131311100313) 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, 771653616 + ... + 771656377.

It is an arithmetic number, because the mean of its divisors is an integer number (533213602927).

Almost surely, 2^{2131311100333} is an apocalyptic number.

It is an amenable number.

2131311100333 is a deficient number, since it is larger than the sum of its proper divisors (1543311375).

2131311100333 is a wasteful number, since it uses less digits than its factorization.

2131311100333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543311374.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 2131311100333 its reverse (3330011131312), we get a palindrome (5461322231645).

The spelling of 2131311100333 in words is "two trillion, one hundred thirty-one billion, three hundred eleven million, one hundred thousand, three hundred thirty-three".