4000320022431 has 64 divisors (see below), whose sum is σ = 5921825541120. Its totient is φ = 2392900392960.

The previous prime is 4000320022409. The next prime is 4000320022451. The reversal of 4000320022431 is 1342200230004.

It is not a de Polignac number, because 4000320022431 - 2⁶ = 4000320022367 is a prime.

It is a super-2 number, since 2×4000320022431² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4000320022398 and 4000320022407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000320022451) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51120471 + ... + 51198663.

It is an arithmetic number, because the mean of its divisors is an integer number (92528524080).

Almost surely, 2^{4000320022431} is an apocalyptic number.

4000320022431 is a deficient number, since it is larger than the sum of its proper divisors (1921505518689).

4000320022431 is a wasteful number, since it uses less digits than its factorization.

4000320022431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78976.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 4000320022431 its reverse (1342200230004), we get a palindrome (5342520252435).

The spelling of 4000320022431 in words is "four trillion, three hundred twenty million, twenty-two thousand, four hundred thirty-one".