231531421240534 has 8 divisors (see below), whose sum is σ = 347297196576528. Its totient is φ = 115765689048360.

The previous prime is 231531421240529. The next prime is 231531421240571. The reversal of 231531421240534 is 435042124135132.

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

It is a congruent number.

It is an unprimeable number.

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, 14289664 + ... + 25831324.

It is an arithmetic number, because the mean of its divisors is an integer number (43412149572066).

Almost surely, 2^{231531421240534} is an apocalyptic number.

231531421240534 is a deficient number, since it is larger than the sum of its proper divisors (115765775335994).

231531421240534 is a wasteful number, since it uses less digits than its factorization.

231531421240534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21571910.

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 231531421240534 its reverse (435042124135132), we get a palindrome (666573545375666).

The spelling of 231531421240534 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, four hundred twenty-one million, two hundred forty thousand, five hundred thirty-four".