400240043004431 has 8 divisors (see below), whose sum is σ = 457417456327680. Its totient is φ = 343062695761848.

The previous prime is 400240043004427. The next prime is 400240043004467. The reversal of 400240043004431 is 134400340042004.

It is a happy number.

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 400240043004431 - 2² = 400240043004427 is a prime.

It is a super-2 number, since 2×400240043004431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400240043004394 and 400240043004403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400240043004401) 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, 2779271 + ... + 28428936.

It is an arithmetic number, because the mean of its divisors is an integer number (57177182040960).

Almost surely, 2^{400240043004431} is an apocalyptic number.

400240043004431 is a deficient number, since it is larger than the sum of its proper divisors (57177413323249).

400240043004431 is a wasteful number, since it uses less digits than its factorization.

400240043004431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33040333.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 400240043004431 its reverse (134400340042004), we get a palindrome (534640383046435).

The spelling of 400240043004431 in words is "four hundred trillion, two hundred forty billion, forty-three million, four thousand, four hundred thirty-one".