400341331 has 4 divisors (see below), whose sum is σ = 431136832. Its totient is φ = 369545832.

The previous prime is 400341329. The next prime is 400341341. The reversal of 400341331 is 133143004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400341331 - 2¹ = 400341329 is a prime.

It is a super-2 number, since 2×400341331² = 320546362613703122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400341299 and 400341308.

It is not an unprimeable number, because it can be changed into a prime (400341301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15397731 + ... + 15397756.

It is an arithmetic number, because the mean of its divisors is an integer number (107784208).

Almost surely, 2^400341331 is an apocalyptic number.

400341331 is a deficient number, since it is larger than the sum of its proper divisors (30795501).

400341331 is a wasteful number, since it uses less digits than its factorization.

400341331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30795500.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 400341331 is about 20008.5314553567. The cubic root of 400341331 is about 737.0158191691.

Adding to 400341331 its reverse (133143004), we get a palindrome (533484335).

The spelling of 400341331 in words is "four hundred million, three hundred forty-one thousand, three hundred thirty-one".