102443431 has 2 divisors, whose sum is σ = 102443432. Its totient is φ = 102443430.

The previous prime is 102443401. The next prime is 102443443. The reversal of 102443431 is 134344201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102443431 - 2⁷ = 102443303 is a prime.

It is a super-2 number, since 2×102443431² = 20989313110103522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102443401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51221715 + 51221716.

It is an arithmetic number, because the mean of its divisors is an integer number (51221716).

Almost surely, 2^102443431 is an apocalyptic number.

102443431 is a deficient number, since it is larger than the sum of its proper divisors (1).

102443431 is an equidigital number, since it uses as much as digits as its factorization.

102443431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 102443431 is about 10121.4342363126. The cubic root of 102443431 is about 467.9089709603.

Adding to 102443431 its reverse (134344201), we get a palindrome (236787632).

The spelling of 102443431 in words is "one hundred two million, four hundred forty-three thousand, four hundred thirty-one".