231554066106556 has 12 divisors (see below), whose sum is σ = 405323014442080. Its totient is φ = 115747490551680.

The previous prime is 231554066106551. The next prime is 231554066106577. The reversal of 231554066106556 is 655601660455132.

231554066106556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231554066106556² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231554066106497 and 231554066106506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231554066106551) 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, 7385607765 + ... + 7385639116.

Almost surely, 2^{231554066106556} is an apocalyptic number.

It is an amenable number.

231554066106556 is a deficient number, since it is larger than the sum of its proper divisors (173768948335524).

231554066106556 is a wasteful number, since it uses less digits than its factorization.

231554066106556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14771250804 (or 14771250802 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 55.

The spelling of 231554066106556 in words is "two hundred thirty-one trillion, five hundred fifty-four billion, sixty-six million, one hundred six thousand, five hundred fifty-six".