231040152 has 192 divisors, whose sum is σ = 786240000. Its totient is φ = 59761152.

The previous prime is 231040151. The next prime is 231040153. The reversal of 231040152 is 251040132.

It is an interprime number because it is at equal distance from previous prime (231040151) and next prime (231040153).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231040151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219724 + ... + 220772.

It is an arithmetic number, because the mean of its divisors is an integer number (4095000).

Almost surely, 2^231040152 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 231040152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393120000).

231040152 is an abundant number, since it is smaller than the sum of its proper divisors (555199848).

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

231040152 is a wasteful number, since it uses less digits than its factorization.

231040152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 231040152 is about 15200.0049999992. The cubic root of 231040152 is about 613.6147923162.

Adding to 231040152 its reverse (251040132), we get a palindrome (482080284).

The spelling of 231040152 in words is "two hundred thirty-one million, forty thousand, one hundred fifty-two".