401233331 has 4 divisors (see below), whose sum is σ = 406729752. Its totient is φ = 395736912.

The previous prime is 401233253. The next prime is 401233351. The reversal of 401233331 is 133332104.

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 401233331 - 2¹⁸ = 400971187 is a prime.

It is a super-2 number, since 2×401233331² = 321976371810711122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401233351) 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, 2748101 + ... + 2748246.

It is an arithmetic number, because the mean of its divisors is an integer number (101682438).

Almost surely, 2^401233331 is an apocalyptic number.

401233331 is a deficient number, since it is larger than the sum of its proper divisors (5496421).

401233331 is an equidigital number, since it uses as much as digits as its factorization.

401233331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5496420.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 401233331 is about 20030.8095442995. The cubic root of 401233331 is about 737.5627944617.

Adding to 401233331 its reverse (133332104), we get a palindrome (534565435).

The spelling of 401233331 in words is "four hundred one million, two hundred thirty-three thousand, three hundred thirty-one".