1103261257 has 24 divisors (see below), whose sum is σ = 1343196224. Its totient is φ = 887507712.

The previous prime is 1103261249. The next prime is 1103261281. The reversal of 1103261257 is 7521623011.

It is a happy number.

It is not a de Polignac number, because 1103261257 - 2³ = 1103261249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103261207) 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 23 ways as a sum of consecutive naturals, for example, 1106083 + ... + 1107079.

Almost surely, 2^1103261257 is an apocalyptic number.

1103261257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1103261257 is a deficient number, since it is larger than the sum of its proper divisors (239934967).

1103261257 is an equidigital number, since it uses as much as digits as its factorization.

1103261257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1568 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1103261257 is about 33215.3768155654. The cubic root of 1103261257 is about 1033.2992697639.

Adding to 1103261257 its reverse (7521623011), we get a palindrome (8624884268).

The spelling of 1103261257 in words is "one billion, one hundred three million, two hundred sixty-one thousand, two hundred fifty-seven".