231231130332 has 96 divisors (see below), whose sum is σ = 583420138560. Its totient is φ = 71017267200.

The previous prime is 231231130331. The next prime is 231231130343. The reversal of 231231130332 is 233031132132.

It is a super-2 number, since 2×231231130332² (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 (231231130331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1770708 + ... + 1896804.

It is an arithmetic number, because the mean of its divisors is an integer number (6077293110).

Almost surely, 2^231231130332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231231130332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291710069280).

231231130332 is an abundant number, since it is smaller than the sum of its proper divisors (352189008228).

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

231231130332 is a wasteful number, since it uses less digits than its factorization.

231231130332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126311 (or 126309 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 231231130332 its reverse (233031132132), we get a palindrome (464262262464).

The spelling of 231231130332 in words is "two hundred thirty-one billion, two hundred thirty-one million, one hundred thirty thousand, three hundred thirty-two".