400313300421 has 4 divisors (see below), whose sum is σ = 533751067232. Its totient is φ = 266875533612.

The previous prime is 400313300389. The next prime is 400313300441. The reversal of 400313300421 is 124003313004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 400313300421 - 2⁵ = 400313300389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400313300441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66718883401 + ... + 66718883406.

It is an arithmetic number, because the mean of its divisors is an integer number (133437766808).

Almost surely, 2^400313300421 is an apocalyptic number.

It is an amenable number.

400313300421 is a deficient number, since it is larger than the sum of its proper divisors (133437766811).

400313300421 is a wasteful number, since it uses less digits than its factorization.

400313300421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133437766810.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 400313300421 its reverse (124003313004), we get a palindrome (524316613425).

The spelling of 400313300421 in words is "four hundred billion, three hundred thirteen million, three hundred thousand, four hundred twenty-one".