401131 has 4 divisors (see below), whose sum is σ = 402592.
Its totient is φ = 399672.
The previous prime is 401119. The next prime is 401161. The reversal of 401131 is 131104.
Adding to 401131 its reverse (131104), we get a palindrome (532235).
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 401131 - 29 = 400619 is a prime.
It is a super-2 number, since 2×4011312 = 321812158322, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (401101) 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, 180 + ... + 913.
It is an arithmetic number, because the mean of its divisors is an integer number (100648).
2401131 is an apocalyptic number.
401131 is a deficient number, since it is larger than the sum of its proper divisors (1461).
401131 is a wasteful number, since it uses less digits than its factorization.
401131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1460.
The product of its (nonzero) digits is 12, while the sum is 10.
The square root of 401131 is about 633.3490348931.
The cubic root of 401131 is about 73.7500086182.
The spelling of 401131 in words is "four hundred one thousand, one hundred thirty-one".