400321202231 has 2 divisors, whose sum is σ = 400321202232. Its totient is φ = 400321202230.

The previous prime is 400321202213. The next prime is 400321202233. The reversal of 400321202231 is 132202123004.

Together with previous prime (400321202213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400321202231 - 2³⁸ = 125443295287 is a prime.

It is a super-2 number, since 2×400321202231² (a number of 24 digits) contains 22 as substring.

Together with 400321202233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400321202233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200160601115 + 200160601116.

It is an arithmetic number, because the mean of its divisors is an integer number (200160601116).

Almost surely, 2^400321202231 is an apocalyptic number.

400321202231 is a deficient number, since it is larger than the sum of its proper divisors (1).

400321202231 is an equidigital number, since it uses as much as digits as its factorization.

400321202231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 400321202231 its reverse (132202123004), we get a palindrome (532523325235).

The spelling of 400321202231 in words is "four hundred billion, three hundred twenty-one million, two hundred two thousand, two hundred thirty-one".