401145031 has 4 divisors (see below), whose sum is σ = 458451472. Its totient is φ = 343838592.

The previous prime is 401145011. The next prime is 401145037. The reversal of 401145031 is 130541104.

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 401145031 - 2⁹ = 401144519 is a prime.

It is a super-2 number, since 2×401145031² = 321834671791981922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401145037) 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, 28653210 + ... + 28653223.

It is an arithmetic number, because the mean of its divisors is an integer number (114612868).

Almost surely, 2^401145031 is an apocalyptic number.

401145031 is a deficient number, since it is larger than the sum of its proper divisors (57306441).

401145031 is an equidigital number, since it uses as much as digits as its factorization.

401145031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57306440.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 401145031 is about 20028.6053183940. The cubic root of 401145031 is about 737.5086849882.

Adding to 401145031 its reverse (130541104), we get a palindrome (531686135).

The spelling of 401145031 in words is "four hundred one million, one hundred forty-five thousand, thirty-one".