102444431 has 6 divisors (see below), whose sum is σ = 108825360. Its totient is φ = 96418016.

The previous prime is 102444427. The next prime is 102444439. The reversal of 102444431 is 134444201.

It is a happy number.

It is not a de Polignac number, because 102444431 - 2² = 102444427 is a prime.

It is a super-2 number, since 2×102444431² = 20989722885827522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102444397 and 102444406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102444439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 176951 + ... + 177528.

It is an arithmetic number, because the mean of its divisors is an integer number (18137560).

Almost surely, 2^102444431 is an apocalyptic number.

102444431 is a deficient number, since it is larger than the sum of its proper divisors (6380929).

102444431 is an equidigital number, since it uses as much as digits as its factorization.

102444431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354513 (or 354496 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 102444431 is about 10121.4836363055. The cubic root of 102444431 is about 467.9104934508.

Adding to 102444431 its reverse (134444201), we get a palindrome (236888632).

The spelling of 102444431 in words is "one hundred two million, four hundred forty-four thousand, four hundred thirty-one".