105531400344 has 32 divisors (see below), whose sum is σ = 279347825520. Its totient is φ = 33107890176.

The previous prime is 105531400343. The next prime is 105531400349. The reversal of 105531400344 is 443004135501.

It is a super-2 number, since 2×105531400344² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105531400343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129327289 + ... + 129328104.

Almost surely, 2^105531400344 is an apocalyptic number.

It is an amenable number.

105531400344 is an abundant number, since it is smaller than the sum of its proper divisors (173816425176).

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

105531400344 is a wasteful number, since it uses less digits than its factorization.

105531400344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258655419 (or 258655415 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 105531400344 its reverse (443004135501), we get a palindrome (548535535845).

The spelling of 105531400344 in words is "one hundred five billion, five hundred thirty-one million, four hundred thousand, three hundred forty-four".