400041031 has 8 divisors (see below), whose sum is σ = 430968944. Its totient is φ = 369135360.

The previous prime is 400041023. The next prime is 400041041. The reversal of 400041031 is 130140004.

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

It is a cyclic number.

It is not a de Polignac number, because 400041031 - 2³ = 400041023 is a prime.

It is a super-2 number, since 2×400041031² = 320065652967085922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400041041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65740 + ... + 71566.

It is an arithmetic number, because the mean of its divisors is an integer number (53871118).

Almost surely, 2^400041031 is an apocalyptic number.

400041031 is a deficient number, since it is larger than the sum of its proper divisors (30927913).

400041031 is a wasteful number, since it uses less digits than its factorization.

400041031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11121.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 400041031 is about 20001.0257486960. The cubic root of 400041031 is about 736.8314921161.

Adding to 400041031 its reverse (130140004), we get a palindrome (530181035).

The spelling of 400041031 in words is "four hundred million, forty-one thousand, thirty-one".