12191831310 has 32 divisors (see below), whose sum is σ = 29285131392. Its totient is φ = 3248406560.

The previous prime is 12191831273. The next prime is 12191831321. The reversal of 12191831310 is 1313819121.

It is a super-2 number, since 2×12191831310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135576 + ... + 206795.

It is an arithmetic number, because the mean of its divisors is an integer number (915160356).

Almost surely, 2^12191831310 is an apocalyptic number.

12191831310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12191831310 is an abundant number, since it is smaller than the sum of its proper divisors (17093300082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12191831310 is a wasteful number, since it uses less digits than its factorization.

12191831310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343568.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 12191831310 in words is "twelve billion, one hundred ninety-one million, eight hundred thirty-one thousand, three hundred ten".