231545430415550 has 12 divisors (see below), whose sum is σ = 430674500573016. Its totient is φ = 92618172166200.

The previous prime is 231545430415543. The next prime is 231545430415583. The reversal of 231545430415550 is 55514034545132.

It is a super-2 number, since 2×231545430415550² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231545430415495 and 231545430415504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2315454304106 + ... + 2315454304205.

It is an arithmetic number, because the mean of its divisors is an integer number (35889541714418).

Almost surely, 2^{231545430415550} is an apocalyptic number.

231545430415550 is a deficient number, since it is larger than the sum of its proper divisors (199129070157466).

231545430415550 is a wasteful number, since it uses less digits than its factorization.

231545430415550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630908608323 (or 4630908608318 counting only the distinct ones).

The product of its (nonzero) digits is 3600000, while the sum is 47.

The spelling of 231545430415550 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty million, four hundred fifteen thousand, five hundred fifty".