401333031 has 12 divisors (see below), whose sum is σ = 632403720. Its totient is φ = 243232080.

The previous prime is 401333027. The next prime is 401333063. The reversal of 401333031 is 130333104.

It is not a de Polignac number, because 401333031 - 2² = 401333027 is a prime.

It is a super-2 number, since 2×401333031² = 322136403543293922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401332995 and 401333013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401333021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2026836 + ... + 2027033.

It is an arithmetic number, because the mean of its divisors is an integer number (52700310).

Almost surely, 2^401333031 is an apocalyptic number.

401333031 is a deficient number, since it is larger than the sum of its proper divisors (231070689).

401333031 is a wasteful number, since it uses less digits than its factorization.

401333031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053886 (or 4053883 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 401333031 is about 20033.2980559867. The cubic root of 401333031 is about 737.6238802149.

Adding to 401333031 its reverse (130333104), we get a palindrome (531666135).

The spelling of 401333031 in words is "four hundred one million, three hundred thirty-three thousand, thirty-one".