231215106425547 has 8 divisors (see below), whose sum is σ = 308304537477520. Its totient is φ = 154134539828640.

The previous prime is 231215106425531. The next prime is 231215106425587. The reversal of 231215106425547 is 745524601512132.

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

It is not a de Polignac number, because 231215106425547 - 2⁴ = 231215106425531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231215106425496 and 231215106425505.

It is not an unprimeable number, because it can be changed into a prime (231215106425587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2216052904 + ... + 2216157237.

It is an arithmetic number, because the mean of its divisors is an integer number (38538067184690).

Almost surely, 2^{231215106425547} is an apocalyptic number.

231215106425547 is a deficient number, since it is larger than the sum of its proper divisors (77089431051973).

231215106425547 is a wasteful number, since it uses less digits than its factorization.

231215106425547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432227533.

The product of its (nonzero) digits is 2016000, while the sum is 48.

Adding to 231215106425547 its reverse (745524601512132), we get a palindrome (976739707937679).

The spelling of 231215106425547 in words is "two hundred thirty-one trillion, two hundred fifteen billion, one hundred six million, four hundred twenty-five thousand, five hundred forty-seven".