103207257 has 8 divisors (see below), whose sum is σ = 152899680. Its totient is φ = 68804820.

The previous prime is 103207243. The next prime is 103207301. The reversal of 103207257 is 752702301.

It is not a de Polignac number, because 103207257 - 2⁴ = 103207241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3822491 = 103207257 / (1 + 0 + 3 + 2 + 0 + 7 + 2 + 5 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 103207257.

It is not an unprimeable number, because it can be changed into a prime (103207207) 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 in 7 ways as a sum of consecutive naturals, for example, 1911219 + ... + 1911272.

It is an arithmetic number, because the mean of its divisors is an integer number (19112460).

Almost surely, 2^103207257 is an apocalyptic number.

It is an amenable number.

103207257 is a deficient number, since it is larger than the sum of its proper divisors (49692423).

103207257 is an equidigital number, since it uses as much as digits as its factorization.

103207257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822500 (or 3822494 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 103207257 is about 10159.0972532012. The cubic root of 103207257 is about 469.0690142013.

Adding to 103207257 its reverse (752702301), we get a palindrome (855909558).

The spelling of 103207257 in words is "one hundred three million, two hundred seven thousand, two hundred fifty-seven".