2231816781362 has 16 divisors (see below), whose sum is σ = 3828096028032. Its totient is φ = 955961805600.

The previous prime is 2231816781331. The next prime is 2231816781367. The reversal of 2231816781362 is 2631876181322.

It is a super-3 number, since 3×2231816781362³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2231816781362.

It is not an unprimeable number, because it can be changed into a prime (2231816781367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44232278 + ... + 44282705.

It is an arithmetic number, because the mean of its divisors is an integer number (239256001752).

Almost surely, 2^{2231816781362} is an apocalyptic number.

2231816781362 is a deficient number, since it is larger than the sum of its proper divisors (1596279246670).

2231816781362 is a wasteful number, since it uses less digits than its factorization.

2231816781362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88516793.

The product of its digits is 1161216, while the sum is 50.

The spelling of 2231816781362 in words is "two trillion, two hundred thirty-one billion, eight hundred sixteen million, seven hundred eighty-one thousand, three hundred sixty-two".