401055331 has 4 divisors (see below), whose sum is σ = 401949000. Its totient is φ = 400161664.

The previous prime is 401055329. The next prime is 401055341. The reversal of 401055331 is 133550104.

It is a happy number.

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 401055331 - 2¹ = 401055329 is a prime.

It is a super-2 number, since 2×401055331² = 321690757047039122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401055311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446161 + ... + 447058.

It is an arithmetic number, because the mean of its divisors is an integer number (100487250).

Almost surely, 2^401055331 is an apocalyptic number.

401055331 is a deficient number, since it is larger than the sum of its proper divisors (893669).

401055331 is an equidigital number, since it uses as much as digits as its factorization.

401055331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893668.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 401055331 is about 20026.3658959882. The cubic root of 401055331 is about 737.4537094761.

The spelling of 401055331 in words is "four hundred one million, fifty-five thousand, three hundred thirty-one".