131421343244 has 12 divisors (see below), whose sum is σ = 235335894024. Its totient is φ = 64182516384.

The previous prime is 131421343243. The next prime is 131421343247. The reversal of 131421343244 is 442343124131.

It is a self number, because there is not a number n which added to its sum of digits gives 131421343244.

It is not an unprimeable number, because it can be changed into a prime (131421343243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382038617 + ... + 382038960.

It is an arithmetic number, because the mean of its divisors is an integer number (19611324502).

Almost surely, 2^131421343244 is an apocalyptic number.

It is an amenable number.

131421343244 is a deficient number, since it is larger than the sum of its proper divisors (103914550780).

131421343244 is a wasteful number, since it uses less digits than its factorization.

131421343244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764077624 (or 764077622 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

Adding to 131421343244 its reverse (442343124131), we get a palindrome (573764467375).

The spelling of 131421343244 in words is "one hundred thirty-one billion, four hundred twenty-one million, three hundred forty-three thousand, two hundred forty-four".