401142331 has 8 divisors (see below), whose sum is σ = 403607600. Its totient is φ = 398684160.

The previous prime is 401142311. The next prime is 401142341. The reversal of 401142331 is 133241104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401142331 is a prime.

It is a super-2 number, since 2×401142331² = 321830339440227122, 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 = 401142299 and 401142308.

It is not an unprimeable number, because it can be changed into a prime (401142311) 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, 147835 + ... + 150523.

It is an arithmetic number, because the mean of its divisors is an integer number (50450950).

Almost surely, 2^401142331 is an apocalyptic number.

401142331 is a deficient number, since it is larger than the sum of its proper divisors (2465269).

401142331 is a wasteful number, since it uses less digits than its factorization.

401142331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 401142331 is about 20028.5379146856. The cubic root of 401142331 is about 737.5070303265.

Adding to 401142331 its reverse (133241104), we get a palindrome (534383435).

The spelling of 401142331 in words is "four hundred one million, one hundred forty-two thousand, three hundred thirty-one".