231541423154132 has 144 divisors (see below), whose sum is σ = 505575315705600. Its totient is φ = 90847216272384.

The previous prime is 231541423154053. The next prime is 231541423154149. The reversal of 231541423154132 is 231451324145132.

It is a super-2 number, since 2×231541423154132² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231541423154132.

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 47 ways as a sum of consecutive naturals, for example, 294349298 + ... + 295134870.

It is an arithmetic number, because the mean of its divisors is an integer number (3510939692400).

Almost surely, 2^{231541423154132} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231541423154132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252787657852800).

231541423154132 is an abundant number, since it is smaller than the sum of its proper divisors (274033892551468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231541423154132 is a wasteful number, since it uses less digits than its factorization.

231541423154132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786122 (or 786107 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

Adding to 231541423154132 its reverse (231451324145132), we get a palindrome (462992747299264).

The spelling of 231541423154132 in words is "two hundred thirty-one trillion, five hundred forty-one billion, four hundred twenty-three million, one hundred fifty-four thousand, one hundred thirty-two".