110128431 has 48 divisors (see below), whose sum is σ = 182808576. Its totient is φ = 58593024.

The previous prime is 110128423. The next prime is 110128441. The reversal of 110128431 is 134821011.

It is a happy number.

It is not a de Polignac number, because 110128431 - 2³ = 110128423 is a prime.

It is a super-2 number, since 2×110128431² = 24256542629043522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 110128398 and 110128407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110128411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 317200 + ... + 317546.

It is an arithmetic number, because the mean of its divisors is an integer number (3808512).

Almost surely, 2^110128431 is an apocalyptic number.

110128431 is a deficient number, since it is larger than the sum of its proper divisors (72680145).

110128431 is a wasteful number, since it uses less digits than its factorization.

110128431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 110128431 is about 10494.2094032852. The cubic root of 110128431 is about 479.3283879813.

Adding to 110128431 its reverse (134821011), we get a palindrome (244949442).

The spelling of 110128431 in words is "one hundred ten million, one hundred twenty-eight thousand, four hundred thirty-one".