401131015 has 4 divisors (see below), whose sum is σ = 481357224. Its totient is φ = 320904808.

The previous prime is 401131001. The next prime is 401131057. The reversal of 401131015 is 510131104.

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 401131015 - 2⁷ = 401130887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401131015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40113097 + ... + 40113106.

It is an arithmetic number, because the mean of its divisors is an integer number (120339306).

Almost surely, 2^401131015 is an apocalyptic number.

401131015 is a deficient number, since it is larger than the sum of its proper divisors (80226209).

401131015 is an equidigital number, since it uses as much as digits as its factorization.

401131015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80226208.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 401131015 is about 20028.2554157870. The cubic root of 401131015 is about 737.5000953749.

Adding to 401131015 its reverse (510131104), we get a palindrome (911262119).

The spelling of 401131015 in words is "four hundred one million, one hundred thirty-one thousand, fifteen".