400320213 has 8 divisors (see below), whose sum is σ = 533920800. Its totient is φ = 266799888.

The previous prime is 400320211. The next prime is 400320229. The reversal of 400320213 is 312023004.

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

It is not a de Polignac number, because 400320213 - 2¹ = 400320211 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 400320192 and 400320201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400320211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7258 + ... + 29211.

It is an arithmetic number, because the mean of its divisors is an integer number (66740100).

Almost surely, 2^400320213 is an apocalyptic number.

It is an amenable number.

400320213 is a deficient number, since it is larger than the sum of its proper divisors (133600587).

400320213 is a wasteful number, since it uses less digits than its factorization.

400320213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40131.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 400320213 is about 20008.0037235102. The cubic root of 400320213 is about 737.0028597496.

Adding to 400320213 its reverse (312023004), we get a palindrome (712343217).

The spelling of 400320213 in words is "four hundred million, three hundred twenty thousand, two hundred thirteen".