402231234 has 8 divisors (see below), whose sum is σ = 804462480. Its totient is φ = 134077076.

The previous prime is 402231229. The next prime is 402231239. The reversal of 402231234 is 432132204.

It is an interprime number because it is at equal distance from previous prime (402231229) and next prime (402231239).

It is a sphenic number, since it is the product of 3 distinct primes.

402231234 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 402231234.

It is not an unprimeable number, because it can be changed into a prime (402231239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33519264 + ... + 33519275.

It is an arithmetic number, because the mean of its divisors is an integer number (100557810).

Almost surely, 2^402231234 is an apocalyptic number.

402231234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

402231234 is a wasteful number, since it uses less digits than its factorization.

402231234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67038544.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 402231234 is about 20055.7032786188. The cubic root of 402231234 is about 738.1737496765.

Adding to 402231234 its reverse (432132204), we get a palindrome (834363438).

The spelling of 402231234 in words is "four hundred two million, two hundred thirty-one thousand, two hundred thirty-four".