231541215250005 has 40 divisors (see below), whose sum is σ = 415967293199832. Its totient is φ = 123218432174592.

The previous prime is 231541215249983. The next prime is 231541215250027. The reversal of 231541215250005 is 500052512145132.

231541215250005 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 4 + 121 + 525 + 0 + 0 + 0 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (231541215249983) and next prime (231541215250027).

It can be written as a sum of positive squares in 4 ways, for example, as 41820976683396 + 189720238566609 = 6466914^2 + 13773897^2 .

It is not a de Polignac number, because 231541215250005 - 2⁵ = 231541215249973 is a prime.

It is a super-2 number, since 2×231541215250005² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 625314592 + ... + 625684761.

Almost surely, 2^{231541215250005} is an apocalyptic number.

It is an amenable number.

231541215250005 is a deficient number, since it is larger than the sum of its proper divisors (184426077949827).

231541215250005 is a wasteful number, since it uses less digits than its factorization.

231541215250005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250999827 (or 1250999818 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 231541215250005 its reverse (500052512145132), we get a palindrome (731593727395137).

The spelling of 231541215250005 in words is "two hundred thirty-one trillion, five hundred forty-one billion, two hundred fifteen million, two hundred fifty thousand, five".