12819591831 has 32 divisors (see below), whose sum is σ = 17826720768. Its totient is φ = 8188853760.

The previous prime is 12819591817. The next prime is 12819591833. The reversal of 12819591831 is 13819591821.

It is not a de Polignac number, because 12819591831 - 2¹³ = 12819583639 is a prime.

It is a super-2 number, since 2×12819591831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12819591833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1405596 + ... + 1414686.

It is an arithmetic number, because the mean of its divisors is an integer number (557085024).

Almost surely, 2^12819591831 is an apocalyptic number.

12819591831 is a deficient number, since it is larger than the sum of its proper divisors (5007128937).

12819591831 is a wasteful number, since it uses less digits than its factorization.

12819591831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9351.

The product of its digits is 155520, while the sum is 48.

The spelling of 12819591831 in words is "twelve billion, eight hundred nineteen million, five hundred ninety-one thousand, eight hundred thirty-one".