231245652 has 96 divisors (see below), whose sum is σ = 614033280. Its totient is φ = 67092480.

The previous prime is 231245639. The next prime is 231245653. The reversal of 231245652 is 256542132.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231245653) 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 31 ways as a sum of consecutive naturals, for example, 738648 + ... + 738960.

It is an arithmetic number, because the mean of its divisors is an integer number (6396180).

Almost surely, 2^231245652 is an apocalyptic number.

231245652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231245652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307016640).

231245652 is an abundant number, since it is smaller than the sum of its proper divisors (382787628).

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

231245652 is a wasteful number, since it uses less digits than its factorization.

231245652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 551 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 231245652 is about 15206.7633637142. The cubic root of 231245652 is about 613.7966661464.

Adding to 231245652 its reverse (256542132), we get a palindrome (487787784).

The spelling of 231245652 in words is "two hundred thirty-one million, two hundred forty-five thousand, six hundred fifty-two".