400232101 has 4 divisors (see below), whose sum is σ = 403774092. Its totient is φ = 396690112.

The previous prime is 400232083. The next prime is 400232111. The reversal of 400232101 is 101232004.

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 204204100 + 196028001 = 14290^2 + 14001^2 .

It is a cyclic number.

It is not a de Polignac number, because 400232101 - 2⁷ = 400231973 is a prime.

It is a Duffinian number.

It is a congruent 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, 1770826 + ... + 1771051.

It is an arithmetic number, because the mean of its divisors is an integer number (100943523).

Almost surely, 2^400232101 is an apocalyptic number.

It is an amenable number.

400232101 is a deficient number, since it is larger than the sum of its proper divisors (3541991).

400232101 is a wasteful number, since it uses less digits than its factorization.

400232101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541990.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 400232101 is about 20005.8016835117. The cubic root of 400232101 is about 736.9487834053.

Adding to 400232101 its reverse (101232004), we get a palindrome (501464105).

It can be divided in two parts, 40023 and 2101, that added together give a palindrome (42124).

The spelling of 400232101 in words is "four hundred million, two hundred thirty-two thousand, one hundred one".