102317431 has 2 divisors, whose sum is σ = 102317432. Its totient is φ = 102317430.

The previous prime is 102317417. The next prime is 102317447. The reversal of 102317431 is 134713201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102317431 - 2⁵ = 102317399 is a prime.

It is a super-2 number, since 2×102317431² = 20937713372879522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102317531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51158715 + 51158716.

It is an arithmetic number, because the mean of its divisors is an integer number (51158716).

Almost surely, 2^102317431 is an apocalyptic number.

102317431 is a deficient number, since it is larger than the sum of its proper divisors (1).

102317431 is an equidigital number, since it uses as much as digits as its factorization.

102317431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 102317431 is about 10115.2079069093. The cubic root of 102317431 is about 467.7170578318.

The spelling of 102317431 in words is "one hundred two million, three hundred seventeen thousand, four hundred thirty-one".