231041151520 has 24 divisors (see below), whose sum is σ = 545834720844. Its totient is φ = 92416460544.

The previous prime is 231041151499. The next prime is 231041151527. The reversal of 231041151520 is 25151140132.

It can be written as a sum of positive squares in 2 ways, for example, as 212347699344 + 18693452176 = 460812^2 + 136724^2 .

It is not an unprimeable number, because it can be changed into a prime (231041151527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722003439 + ... + 722003758.

Almost surely, 2^231041151520 is an apocalyptic number.

231041151520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231041151520 is an abundant number, since it is smaller than the sum of its proper divisors (314793569324).

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

231041151520 is a wasteful number, since it uses less digits than its factorization.

231041151520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444007212 (or 1444007204 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 231041151520 its reverse (25151140132), we get a palindrome (256192291652).

The spelling of 231041151520 in words is "two hundred thirty-one billion, forty-one million, one hundred fifty-one thousand, five hundred twenty".