103440253 has 16 divisors (see below), whose sum is σ = 121524480. Its totient is φ = 86198400.

The previous prime is 103440251. The next prime is 103440277. The reversal of 103440253 is 352044301.

It is not a de Polignac number, because 103440253 - 2¹ = 103440251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103440251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125583 + ... + 126403.

It is an arithmetic number, because the mean of its divisors is an integer number (7595280).

Almost surely, 2^103440253 is an apocalyptic number.

It is an amenable number.

103440253 is a deficient number, since it is larger than the sum of its proper divisors (18084227).

103440253 is an equidigital number, since it uses as much as digits as its factorization.

103440253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 103440253 is about 10170.5581459426. The cubic root of 103440253 is about 469.4217318511.

Adding to 103440253 its reverse (352044301), we get a palindrome (455484554).

The spelling of 103440253 in words is "one hundred three million, four hundred forty thousand, two hundred fifty-three".