231521452152 has 64 divisors (see below), whose sum is σ = 581321664000. Its totient is φ = 76838404224.

The previous prime is 231521452111. The next prime is 231521452177. The reversal of 231521452152 is 251254125132.

It is a super-2 number, since 2×231521452152² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12861174 + ... + 12879162.

It is an arithmetic number, because the mean of its divisors is an integer number (9083151000).

Almost surely, 2^231521452152 is an apocalyptic number.

It is an amenable number.

231521452152 is an abundant number, since it is smaller than the sum of its proper divisors (349800211848).

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

231521452152 is a wasteful number, since it uses less digits than its factorization.

231521452152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20300 (or 20296 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

Adding to 231521452152 its reverse (251254125132), we get a palindrome (482775577284).

The spelling of 231521452152 in words is "two hundred thirty-one billion, five hundred twenty-one million, four hundred fifty-two thousand, one hundred fifty-two".