401455131 has 24 divisors (see below), whose sum is σ = 672413952. Its totient is φ = 208546800.

The previous prime is 401455129. The next prime is 401455139. The reversal of 401455131 is 131554104.

It is a happy number.

It is not a de Polignac number, because 401455131 - 2¹ = 401455129 is a prime.

It is a super-2 number, since 2×401455131² = 322332444412454322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401455139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76455 + ... + 81536.

It is an arithmetic number, because the mean of its divisors is an integer number (28017248).

Almost surely, 2^401455131 is an apocalyptic number.

401455131 is a deficient number, since it is larger than the sum of its proper divisors (270958821).

401455131 is a wasteful number, since it uses less digits than its factorization.

401455131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158023 (or 158012 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 401455131 is about 20036.3452505690. The cubic root of 401455131 is about 737.6986765700.

The spelling of 401455131 in words is "four hundred one million, four hundred fifty-five thousand, one hundred thirty-one".