401616031 has 4 divisors (see below), whose sum is σ = 401866632. Its totient is φ = 401365432.

The previous prime is 401615999. The next prime is 401616079. The reversal of 401616031 is 130616104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401616031 - 2⁵ = 401615999 is a prime.

It is a super-2 number, since 2×401616031² = 322590872712385922, 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 = 401615993 and 401616011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401617031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122881 + ... + 126106.

It is an arithmetic number, because the mean of its divisors is an integer number (100466658).

Almost surely, 2^401616031 is an apocalyptic number.

401616031 is a deficient number, since it is larger than the sum of its proper divisors (250601).

401616031 is a wasteful number, since it uses less digits than its factorization.

401616031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250600.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 401616031 is about 20040.3600516558. The cubic root of 401616031 is about 737.7972179794.

The spelling of 401616031 in words is "four hundred one million, six hundred sixteen thousand, thirty-one".