103290731 has 2 divisors, whose sum is σ = 103290732. Its totient is φ = 103290730.

The previous prime is 103290713. The next prime is 103290757. The reversal of 103290731 is 137092301.

Together with previous prime (103290713) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (103290757) can be obtained adding 103290731 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103290731 - 2¹⁸ = 103028587 is a prime.

It is a super-2 number, since 2×103290731² = 21337950221028722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103290731.

It is not a weakly prime, because it can be changed into another prime (103293731) 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, 51645365 + 51645366.

It is an arithmetic number, because the mean of its divisors is an integer number (51645366).

Almost surely, 2^103290731 is an apocalyptic number.

103290731 is a deficient number, since it is larger than the sum of its proper divisors (1).

103290731 is an equidigital number, since it uses as much as digits as its factorization.

103290731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 103290731 is about 10163.2047603106. The cubic root of 103290731 is about 469.1954410843.

The spelling of 103290731 in words is "one hundred three million, two hundred ninety thousand, seven hundred thirty-one".