400241331 has 80 divisors (see below), whose sum is σ = 729298944. Its totient is φ = 213782976.

The previous prime is 400241329. The next prime is 400241333. The reversal of 400241331 is 133142004.

It is an interprime number because it is at equal distance from previous prime (400241329) and next prime (400241333).

It is not a de Polignac number, because 400241331 - 2¹ = 400241329 is a prime.

It is a super-2 number, since 2×400241331² = 320386246081303122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400241333) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 612601 + ... + 613253.

Almost surely, 2^400241331 is an apocalyptic number.

400241331 is a deficient number, since it is larger than the sum of its proper divisors (329057613).

400241331 is a wasteful number, since it uses less digits than its factorization.

400241331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 733 counting only the distinct ones).

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

The square root of 400241331 is about 20006.0323652642. The cubic root of 400241331 is about 736.9544484389.

Adding to 400241331 its reverse (133142004), we get a palindrome (533383335).

The spelling of 400241331 in words is "four hundred million, two hundred forty-one thousand, three hundred thirty-one".