110431442421 has 10 divisors (see below), whose sum is σ = 164965488182. Its totient is φ = 73620961560.

The previous prime is 110431442419. The next prime is 110431442431. The reversal of 110431442421 is 124244134011.

110431442421 is a `hidden beast` number, since 1 + 104 + 314 + 4 + 242 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 59359962321 + 51071480100 = 243639^2 + 225990^2 .

It is not a de Polignac number, because 110431442421 - 2¹ = 110431442419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110431442431) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 681675490 + ... + 681675651.

Almost surely, 2^110431442421 is an apocalyptic number.

It is an amenable number.

110431442421 is a deficient number, since it is larger than the sum of its proper divisors (54534045761).

110431442421 is an equidigital number, since it uses as much as digits as its factorization.

110431442421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363351153 (or 1363351144 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 110431442421 its reverse (124244134011), we get a palindrome (234675576432).

The spelling of 110431442421 in words is "one hundred ten billion, four hundred thirty-one million, four hundred forty-two thousand, four hundred twenty-one".