103255232521 has 4 divisors (see below), whose sum is σ = 118005980032. Its totient is φ = 88504485012.

The previous prime is 103255232497. The next prime is 103255232539. The reversal of 103255232521 is 125232552301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 125232552301 = 151 ⋅829354651.

It is a cyclic number.

It is not a de Polignac number, because 103255232521 - 2⁵ = 103255232489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103258232521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7375373745 + ... + 7375373758.

It is an arithmetic number, because the mean of its divisors is an integer number (29501495008).

Almost surely, 2^103255232521 is an apocalyptic number.

It is an amenable number.

103255232521 is a deficient number, since it is larger than the sum of its proper divisors (14750747511).

103255232521 is an equidigital number, since it uses as much as digits as its factorization.

103255232521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14750747510.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 103255232521 its reverse (125232552301), we get a palindrome (228487784822).

The spelling of 103255232521 in words is "one hundred three billion, two hundred fifty-five million, two hundred thirty-two thousand, five hundred twenty-one".