400232343 has 36 divisors (see below), whose sum is σ = 659502312. Its totient is φ = 215228160.

The previous prime is 400232317. The next prime is 400232369. The reversal of 400232343 is 343232004.

It is an interprime number because it is at equal distance from previous prime (400232317) and next prime (400232369).

It is not a de Polignac number, because 400232343 - 2⁶ = 400232279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400232303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 37773 + ... + 47193.

Almost surely, 2^400232343 is an apocalyptic number.

400232343 is a deficient number, since it is larger than the sum of its proper divisors (259269969).

400232343 is a wasteful number, since it uses less digits than its factorization.

400232343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9472 (or 9448 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 400232343 is about 20005.8077317563. The cubic root of 400232343 is about 736.9489319371.

Adding to 400232343 its reverse (343232004), we get a palindrome (743464347).

The spelling of 400232343 in words is "four hundred million, two hundred thirty-two thousand, three hundred forty-three".