400234331 has 8 divisors (see below), whose sum is σ = 458402304. Its totient is φ = 342314280.

The previous prime is 400234327. The next prime is 400234357. The reversal of 400234331 is 133432004.

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

It is not a de Polignac number, because 400234331 - 2² = 400234327 is a prime.

It is a super-2 number, since 2×400234331² = 320375039422035122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400234301) 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 7 ways as a sum of consecutive naturals, for example, 58505 + ... + 64986.

It is an arithmetic number, because the mean of its divisors is an integer number (57300288).

Almost surely, 2^400234331 is an apocalyptic number.

400234331 is a deficient number, since it is larger than the sum of its proper divisors (58167973).

400234331 is a wasteful number, since it uses less digits than its factorization.

400234331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123961.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 400234331 is about 20005.8574172666. The cubic root of 400234331 is about 736.9501521050.

Adding to 400234331 its reverse (133432004), we get a palindrome (533666335).

The spelling of 400234331 in words is "four hundred million, two hundred thirty-four thousand, three hundred thirty-one".