401340231 has 8 divisors (see below), whose sum is σ = 594578160. Its totient is φ = 267560136.

The previous prime is 401340197. The next prime is 401340239. The reversal of 401340231 is 132043104.

401340231 is a `hidden beast` number, since 401 + 34 + 0 + 231 = 666.

It is not a de Polignac number, because 401340231 - 2¹⁴ = 401323847 is a prime.

It is a super-2 number, since 2×401340231² = 322147962038266722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401340239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7432200 + ... + 7432253.

It is an arithmetic number, because the mean of its divisors is an integer number (74322270).

Almost surely, 2^401340231 is an apocalyptic number.

401340231 is a deficient number, since it is larger than the sum of its proper divisors (193237929).

401340231 is a wasteful number, since it uses less digits than its factorization.

401340231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14864462 (or 14864456 counting only the distinct ones).

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

The square root of 401340231 is about 20033.4777559963. The cubic root of 401340231 is about 737.6282912317.

Adding to 401340231 its reverse (132043104), we get a palindrome (533383335).

It can be divided in two parts, 4013 and 40231, that added together give a palindrome (44244).

The spelling of 401340231 in words is "four hundred one million, three hundred forty thousand, two hundred thirty-one".