103312687 has 2 divisors, whose sum is σ = 103312688. Its totient is φ = 103312686.

The previous prime is 103312639. The next prime is 103312691. The reversal of 103312687 is 786213301.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103312687 is a prime.

It is a super-2 number, since 2×103312687² = 21347022590319938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103312637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51656343 + 51656344.

It is an arithmetic number, because the mean of its divisors is an integer number (51656344).

Almost surely, 2^103312687 is an apocalyptic number.

103312687 is a deficient number, since it is larger than the sum of its proper divisors (1).

103312687 is an equidigital number, since it uses as much as digits as its factorization.

103312687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 103312687 is about 10164.2848740086. The cubic root of 103312687 is about 469.2286835807.

Adding to 103312687 its reverse (786213301), we get a palindrome (889525988).

The spelling of 103312687 in words is "one hundred three million, three hundred twelve thousand, six hundred eighty-seven".