400321500213 has 16 divisors (see below), whose sum is σ = 537355324800. Its totient is φ = 265084723200.

The previous prime is 400321500193. The next prime is 400321500223. The reversal of 400321500213 is 312005123004.

It is not a de Polignac number, because 400321500213 - 2⁵ = 400321500181 is a prime.

It is a super-3 number, since 3×400321500213³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400321500213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400321500223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4617973 + ... + 4703861.

It is an arithmetic number, because the mean of its divisors is an integer number (33584707800).

Almost surely, 2^400321500213 is an apocalyptic number.

It is an amenable number.

400321500213 is a deficient number, since it is larger than the sum of its proper divisors (137033824587).

400321500213 is a wasteful number, since it uses less digits than its factorization.

400321500213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96332.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 400321500213 its reverse (312005123004), we get a palindrome (712326623217).

The spelling of 400321500213 in words is "four hundred billion, three hundred twenty-one million, five hundred thousand, two hundred thirteen".