231550510255403 has 4 divisors (see below), whose sum is σ = 234481529372640. Its totient is φ = 228619491138168.

The previous prime is 231550510255381. The next prime is 231550510255439. The reversal of 231550510255403 is 304552015055132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231550510255403 - 2³⁰ = 231549436513579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231550510155403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465509558500 + ... + 1465509558657.

It is an arithmetic number, because the mean of its divisors is an integer number (58620382343160).

Almost surely, 2^{231550510255403} is an apocalyptic number.

231550510255403 is a deficient number, since it is larger than the sum of its proper divisors (2931019117237).

231550510255403 is an equidigital number, since it uses as much as digits as its factorization.

231550510255403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931019117236.

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 231550510255403 in words is "two hundred thirty-one trillion, five hundred fifty billion, five hundred ten million, two hundred fifty-five thousand, four hundred three".