231212430 has 24 divisors (see below), whose sum is σ = 601152552. Its totient is φ = 61656624.

The previous prime is 231212383. The next prime is 231212431. The reversal of 231212430 is 34212132.

231212430 is a `hidden beast` number, since 23 + 1 + 212 + 430 = 666.

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 (231212431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1284424 + ... + 1284603.

It is an arithmetic number, because the mean of its divisors is an integer number (25048023).

Almost surely, 2^231212430 is an apocalyptic number.

231212430 is an abundant number, since it is smaller than the sum of its proper divisors (369940122).

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

231212430 is a wasteful number, since it uses less digits than its factorization.

231212430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569040 (or 2569037 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231212430 is about 15205.6709815779. The cubic root of 231212430 is about 613.7672709566.

Adding to 231212430 its reverse (34212132), we get a palindrome (265424562).

The spelling of 231212430 in words is "two hundred thirty-one million, two hundred twelve thousand, four hundred thirty".