2131212062365 has 8 divisors (see below), whose sum is σ = 2566182990168. Its totient is φ = 1699150639680.

The previous prime is 2131212062279. The next prime is 2131212062377. The reversal of 2131212062365 is 5632602121312.

It can be written as a sum of positive squares in 4 ways, for example, as 427680684729 + 1703531377636 = 653973^2 + 1305194^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2131212062365 - 2²³ = 2131203673757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131212062365.

It is a congruent number.

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, 727374666 + ... + 727377595.

It is an arithmetic number, because the mean of its divisors is an integer number (320772873771).

Almost surely, 2^{2131212062365} is an apocalyptic number.

It is an amenable number.

2131212062365 is a deficient number, since it is larger than the sum of its proper divisors (434970927803).

2131212062365 is a wasteful number, since it uses less digits than its factorization.

2131212062365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454752559.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 2131212062365 its reverse (5632602121312), we get a palindrome (7763814183677).

The spelling of 2131212062365 in words is "two trillion, one hundred thirty-one billion, two hundred twelve million, sixty-two thousand, three hundred sixty-five".