401113831 has 2 divisors, whose sum is σ = 401113832. Its totient is φ = 401113830.

The previous prime is 401113733. The next prime is 401113837. The reversal of 401113831 is 138311104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401113831 - 2¹⁹ = 400589543 is a prime.

It is a super-2 number, since 2×401113831² = 321784610838993122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401113837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200556915 + 200556916.

It is an arithmetic number, because the mean of its divisors is an integer number (200556916).

Almost surely, 2^401113831 is an apocalyptic number.

401113831 is a deficient number, since it is larger than the sum of its proper divisors (1).

401113831 is an equidigital number, since it uses as much as digits as its factorization.

401113831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 401113831 is about 20027.8264172626. The cubic root of 401113831 is about 737.4895640006.

Adding to 401113831 its reverse (138311104), we get a palindrome (539424935).

The spelling of 401113831 in words is "four hundred one million, one hundred thirteen thousand, eight hundred thirty-one".