231005412 has 96 divisors (see below), whose sum is σ = 656423040. Its totient is φ = 69672960.

The previous prime is 231005389. The next prime is 231005419. The reversal of 231005412 is 214500132.

231005412 is a `hidden beast` number, since 23 + 100 + 541 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (231005419) 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, 400068 + ... + 400644.

It is an arithmetic number, because the mean of its divisors is an integer number (6837740).

Almost surely, 2^231005412 is an apocalyptic number.

231005412 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 231005412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328211520).

231005412 is an abundant number, since it is smaller than the sum of its proper divisors (425417628).

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

231005412 is a wasteful number, since it uses less digits than its factorization.

231005412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 930 counting only the distinct ones).

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

The square root of 231005412 is about 15198.8621942565. The cubic root of 231005412 is about 613.5840356905.

Adding to 231005412 its reverse (214500132), we get a palindrome (445505544).

The spelling of 231005412 in words is "two hundred thirty-one million, five thousand, four hundred twelve".