12781631083 has 16 divisors (see below), whose sum is σ = 14014570752. Its totient is φ = 11585700000.

The previous prime is 12781631081. The next prime is 12781631087. The reversal of 12781631083 is 38013618721.

It is a cyclic number.

It is not a de Polignac number, because 12781631083 - 2¹ = 12781631081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12781631081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204088 + ... + 259258.

It is an arithmetic number, because the mean of its divisors is an integer number (875910672).

Almost surely, 2^12781631083 is an apocalyptic number.

12781631083 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12781631083 is a deficient number, since it is larger than the sum of its proper divisors (1232939669).

12781631083 is a wasteful number, since it uses less digits than its factorization.

12781631083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55506.

The product of its (nonzero) digits is 48384, while the sum is 40.

It can be divided in two parts, 1278 and 1631083, that added together give a palindrome (1632361).

The spelling of 12781631083 in words is "twelve billion, seven hundred eighty-one million, six hundred thirty-one thousand, eighty-three".