400180323 has 12 divisors (see below), whose sum is σ = 566807960. Its totient is φ = 251092992.

The previous prime is 400180247. The next prime is 400180393. The reversal of 400180323 is 323081004.

It is a happy number.

It is not a de Polignac number, because 400180323 - 2²¹ = 398083171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400180323.

It is not an unprimeable number, because it can be changed into a prime (400180393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229918 + ... + 231651.

Almost surely, 2^400180323 is an apocalyptic number.

400180323 is a deficient number, since it is larger than the sum of its proper divisors (166627637).

400180323 is a wasteful number, since it uses less digits than its factorization.

400180323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461606 (or 461589 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 400180323 is about 20004.5075670460. The cubic root of 400180323 is about 736.9170023632.

The spelling of 400180323 in words is "four hundred million, one hundred eighty thousand, three hundred twenty-three".