401123831 has 8 divisors (see below), whose sum is σ = 413514960. Its totient is φ = 388919232.

The previous prime is 401123819. The next prime is 401123867. The reversal of 401123831 is 138321104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401123831 is a prime.

It is a super-2 number, since 2×401123831² = 321800655592233122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401123797 and 401123806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401122831) 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 7 ways as a sum of consecutive naturals, for example, 42260 + ... + 50873.

It is an arithmetic number, because the mean of its divisors is an integer number (51689370).

Almost surely, 2^401123831 is an apocalyptic number.

401123831 is a deficient number, since it is larger than the sum of its proper divisors (12391129).

401123831 is an equidigital number, since it uses as much as digits as its factorization.

401123831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93265.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 401123831 is about 20028.0760683596. The cubic root of 401123831 is about 737.4956926302.

Adding to 401123831 its reverse (138321104), we get a palindrome (539444935).

The spelling of 401123831 in words is "four hundred one million, one hundred twenty-three thousand, eight hundred thirty-one".