401435131 has 4 divisors (see below), whose sum is σ = 409976352. Its totient is φ = 392893912.

The previous prime is 401435129. The next prime is 401435147. The reversal of 401435131 is 131534104.

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 401435131 - 2¹ = 401435129 is a prime.

It is a super-2 number, since 2×401435131² = 322300328801974322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401435171) 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, 4270540 + ... + 4270633.

It is an arithmetic number, because the mean of its divisors is an integer number (102494088).

Almost surely, 2^401435131 is an apocalyptic number.

401435131 is a deficient number, since it is larger than the sum of its proper divisors (8541221).

401435131 is an equidigital number, since it uses as much as digits as its factorization.

401435131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8541220.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 401435131 is about 20035.8461513359. The cubic root of 401435131 is about 737.6864259535.

Adding to 401435131 its reverse (131534104), we get a palindrome (532969235).

The spelling of 401435131 in words is "four hundred one million, four hundred thirty-five thousand, one hundred thirty-one".