401322031 has 6 divisors (see below), whose sum is σ = 441122696. Its totient is φ = 364838100.

The previous prime is 401322013. The next prime is 401322067. The reversal of 401322031 is 130223104.

It is a happy number.

It is not a de Polignac number, because 401322031 - 2⁹ = 401321519 is a prime.

It is a super-2 number, since 2×401322031² = 322118745131929922, 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 = 401321996 and 401322014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401323031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1658235 + ... + 1658476.

Almost surely, 2^401322031 is an apocalyptic number.

401322031 is a deficient number, since it is larger than the sum of its proper divisors (39800665).

401322031 is a wasteful number, since it uses less digits than its factorization.

401322031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316733 (or 3316722 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 401322031 is about 20033.0235111927. The cubic root of 401322031 is about 737.6171410596.

Adding to 401322031 its reverse (130223104), we get a palindrome (531545135).

The spelling of 401322031 in words is "four hundred one million, three hundred twenty-two thousand, thirty-one".