400102323 has 16 divisors (see below), whose sum is σ = 561974400. Its totient is φ = 252504000.

The previous prime is 400102321. The next prime is 400102331. The reversal of 400102323 is 323201004.

It is not a de Polignac number, because 400102323 - 2¹ = 400102321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400102321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131823 + ... + 134823.

It is an arithmetic number, because the mean of its divisors is an integer number (35123400).

Almost surely, 2^400102323 is an apocalyptic number.

400102323 is a deficient number, since it is larger than the sum of its proper divisors (161872077).

400102323 is a wasteful number, since it uses less digits than its factorization.

400102323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5362.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 400102323 is about 20002.5579114272. The cubic root of 400102323 is about 736.8691212308.

Adding to 400102323 its reverse (323201004), we get a palindrome (723303327).

The spelling of 400102323 in words is "four hundred million, one hundred two thousand, three hundred twenty-three".