231301606551 has 8 divisors (see below), whose sum is σ = 308405710080. Its totient is φ = 154199287032.

The previous prime is 231301606541. The next prime is 231301606553. The reversal of 231301606551 is 155606103132.

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

It is not a de Polignac number, because 231301606551 - 2¹¹ = 231301604503 is a prime.

It is a super-2 number, since 2×231301606551² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231301606553) 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, 106575 + ... + 688448.

It is an arithmetic number, because the mean of its divisors is an integer number (38550713760).

Almost surely, 2^231301606551 is an apocalyptic number.

231301606551 is a deficient number, since it is larger than the sum of its proper divisors (77104103529).

231301606551 is an equidigital number, since it uses as much as digits as its factorization.

231301606551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892005.

The product of its (nonzero) digits is 16200, while the sum is 33.

Adding to 231301606551 its reverse (155606103132), we get a palindrome (386907709683).

The spelling of 231301606551 in words is "two hundred thirty-one billion, three hundred one million, six hundred six thousand, five hundred fifty-one".