102788431 has 2 divisors, whose sum is σ = 102788432. Its totient is φ = 102788430.

The previous prime is 102788419. The next prime is 102788437. The reversal of 102788431 is 134887201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102788431 - 2¹⁹ = 102264143 is a prime.

It is a super-2 number, since 2×102788431² = 21130923094883522, which contains 22 as substring.

It is equal to p_5912827 and since 102788431 and 5912827 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102788437) 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 as a sum of consecutive naturals, namely, 51394215 + 51394216.

It is an arithmetic number, because the mean of its divisors is an integer number (51394216).

Almost surely, 2^102788431 is an apocalyptic number.

102788431 is a deficient number, since it is larger than the sum of its proper divisors (1).

102788431 is an equidigital number, since it uses as much as digits as its factorization.

102788431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 102788431 is about 10138.4629505660. The cubic root of 102788431 is about 468.4336433467.

The spelling of 102788431 in words is "one hundred two million, seven hundred eighty-eight thousand, four hundred thirty-one".