231532215441 has 4 divisors (see below), whose sum is σ = 308709620592. Its totient is φ = 154354810292.

The previous prime is 231532215401. The next prime is 231532215511. The reversal of 231532215441 is 144512235132.

231532215441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231532215441 - 2²⁶ = 231465106577 is a prime.

It is a super-3 number, since 3×231532215441³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (231532215401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38588702571 + ... + 38588702576.

It is an arithmetic number, because the mean of its divisors is an integer number (77177405148).

Almost surely, 2^231532215441 is an apocalyptic number.

It is an amenable number.

231532215441 is a deficient number, since it is larger than the sum of its proper divisors (77177405151).

231532215441 is an equidigital number, since it uses as much as digits as its factorization.

231532215441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77177405150.

The product of its digits is 28800, while the sum is 33.

The spelling of 231532215441 in words is "two hundred thirty-one billion, five hundred thirty-two million, two hundred fifteen thousand, four hundred forty-one".