231531425541055 has 8 divisors (see below), whose sum is σ = 277971996650400. Its totient is φ = 185135616432096.

The previous prime is 231531425541049. The next prime is 231531425541061. The reversal of 231531425541055 is 550145524135132.

It is an interprime number because it is at equal distance from previous prime (231531425541049) and next prime (231531425541061).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231531425541055 - 2⁹ = 231531425540543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231531425540996 and 231531425541014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11190488715 + ... + 11190509404.

It is an arithmetic number, because the mean of its divisors is an integer number (34746499581300).

Almost surely, 2^{231531425541055} is an apocalyptic number.

231531425541055 is a deficient number, since it is larger than the sum of its proper divisors (46440571109345).

231531425541055 is a wasteful number, since it uses less digits than its factorization.

231531425541055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22381000193.

The product of its (nonzero) digits is 1800000, while the sum is 46.

Adding to 231531425541055 its reverse (550145524135132), we get a palindrome (781676949676187).

The spelling of 231531425541055 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, four hundred twenty-five million, five hundred forty-one thousand, fifty-five".