400243344031 has 8 divisors (see below), whose sum is σ = 403255779264. Its totient is φ = 397232227200.

The previous prime is 400243343999. The next prime is 400243344037. The reversal of 400243344031 is 130443342004.

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

It is a cyclic number.

It is not a de Polignac number, because 400243344031 - 2⁵ = 400243343999 is a prime.

It is a super-2 number, since 2×400243344031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400243344037) 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, 284131 + ... + 938731.

It is an arithmetic number, because the mean of its divisors is an integer number (50406972408).

Almost surely, 2^400243344031 is an apocalyptic number.

400243344031 is a deficient number, since it is larger than the sum of its proper divisors (3012435233).

400243344031 is a wasteful number, since it uses less digits than its factorization.

400243344031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659201.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 400243344031 its reverse (130443342004), we get a palindrome (530686686035).

The spelling of 400243344031 in words is "four hundred billion, two hundred forty-three million, three hundred forty-four thousand, thirty-one".