400231115 has 8 divisors (see below), whose sum is σ = 483783840. Its totient is φ = 317847232.

The previous prime is 400231099. The next prime is 400231127. The reversal of 400231115 is 511132004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400231115 - 2⁴ = 400231099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400231093 and 400231102.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 291455 + ... + 292824.

It is an arithmetic number, because the mean of its divisors is an integer number (60472980).

Almost surely, 2^400231115 is an apocalyptic number.

400231115 is a deficient number, since it is larger than the sum of its proper divisors (83552725).

400231115 is a wasteful number, since it uses less digits than its factorization.

400231115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584421.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 400231115 is about 20005.7770406450. Note that the first 3 decimals coincide. The cubic root of 400231115 is about 736.9481782297.

Adding to 400231115 its reverse (511132004), we get a palindrome (911363119).

The spelling of 400231115 in words is "four hundred million, two hundred thirty-one thousand, one hundred fifteen".