400232113 has 4 divisors (see below), whose sum is σ = 400410468. Its totient is φ = 400053760.

The previous prime is 400232111. The next prime is 400232123. The reversal of 400232113 is 311232004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 365268544 + 34963569 = 19112^2 + 5913^2 .

It is a cyclic number.

It is not a de Polignac number, because 400232113 - 2¹ = 400232111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400232111) 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 3 ways as a sum of consecutive naturals, for example, 85768 + ... + 90313.

It is an arithmetic number, because the mean of its divisors is an integer number (100102617).

Almost surely, 2^400232113 is an apocalyptic number.

It is an amenable number.

400232113 is a deficient number, since it is larger than the sum of its proper divisors (178355).

400232113 is a wasteful number, since it uses less digits than its factorization.

400232113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178354.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 400232113 is about 20005.8019834247. The cubic root of 400232113 is about 736.9487907705.

Adding to 400232113 its reverse (311232004), we get a palindrome (711464117).

The spelling of 400232113 in words is "four hundred million, two hundred thirty-two thousand, one hundred thirteen".