400001123383 has 2 divisors, whose sum is σ = 400001123384. Its totient is φ = 400001123382.

The previous prime is 400001123359. The next prime is 400001123437. The reversal of 400001123383 is 383321100004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400001123383 - 2⁵ = 400001123351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400001123303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200000561691 + 200000561692.

It is an arithmetic number, because the mean of its divisors is an integer number (200000561692).

Almost surely, 2^400001123383 is an apocalyptic number.

400001123383 is a deficient number, since it is larger than the sum of its proper divisors (1).

400001123383 is an equidigital number, since it uses as much as digits as its factorization.

400001123383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 400001123383 its reverse (383321100004), we get a palindrome (783322223387).

The spelling of 400001123383 in words is "four hundred billion, one million, one hundred twenty-three thousand, three hundred eighty-three".