2131052891709 has 48 divisors (see below), whose sum is σ = 3481297198080. Its totient is φ = 1152980529120.

The previous prime is 2131052891687. The next prime is 2131052891711. The reversal of 2131052891709 is 9071982501312.

It is a happy number.

It is not a de Polignac number, because 2131052891709 - 2¹³ = 2131052883517 is a prime.

It is a super-2 number, since 2×2131052891709² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131052895709) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4590924 + ... + 5033754.

It is an arithmetic number, because the mean of its divisors is an integer number (72527024960).

Almost surely, 2^{2131052891709} is an apocalyptic number.

It is an amenable number.

2131052891709 is a deficient number, since it is larger than the sum of its proper divisors (1350244306371).

2131052891709 is a wasteful number, since it uses less digits than its factorization.

2131052891709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444590 (or 444583 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 48.

The spelling of 2131052891709 in words is "two trillion, one hundred thirty-one billion, fifty-two million, eight hundred ninety-one thousand, seven hundred nine".