401231016 has 64 divisors (see below), whose sum is σ = 1150502400. Its totient is φ = 129427200.

The previous prime is 401230993. The next prime is 401231023. The reversal of 401231016 is 610132104.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 401231016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23265 + ... + 36656.

It is an arithmetic number, because the mean of its divisors is an integer number (17976600).

Almost surely, 2^401231016 is an apocalyptic number.

It is an amenable number.

401231016 is an abundant number, since it is smaller than the sum of its proper divisors (749271384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401231016 is a wasteful number, since it uses less digits than its factorization.

401231016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59967 (or 59957 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 401231016 is about 20030.7517582341. The cubic root of 401231016 is about 737.5613759511.

The spelling of 401231016 in words is "four hundred one million, two hundred thirty-one thousand, sixteen".