400413231 has 6 divisors (see below), whose sum is σ = 578374680. Its totient is φ = 266942148.

The previous prime is 400413229. The next prime is 400413241. The reversal of 400413231 is 132314004.

It is not a de Polignac number, because 400413231 - 2¹ = 400413229 is a prime.

It is a super-2 number, since 2×400413231² = 320661511119718722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400413241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22245171 + ... + 22245188.

It is an arithmetic number, because the mean of its divisors is an integer number (96395780).

Almost surely, 2^400413231 is an apocalyptic number.

400413231 is a deficient number, since it is larger than the sum of its proper divisors (177961449).

400413231 is a wasteful number, since it uses less digits than its factorization.

400413231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44490365 (or 44490362 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 400413231 is about 20010.3281082545. The cubic root of 400413231 is about 737.0599384087.

Adding to 400413231 its reverse (132314004), we get a palindrome (532727235).

The spelling of 400413231 in words is "four hundred million, four hundred thirteen thousand, two hundred thirty-one".