401312132 has 72 divisors (see below), whose sum is σ = 823447296. Its totient is φ = 170386944.

The previous prime is 401312113. The next prime is 401312203. The reversal of 401312132 is 231213104.

It is a super-2 number, since 2×401312132² = 322102854580770848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 401312132.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 539753 + ... + 540495.

It is an arithmetic number, because the mean of its divisors is an integer number (11436768).

Almost surely, 2^401312132 is an apocalyptic number.

It is an amenable number.

401312132 is an abundant number, since it is smaller than the sum of its proper divisors (422135164).

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

401312132 is a wasteful number, since it uses less digits than its factorization.

401312132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 401312132 is about 20032.7764426202. The cubic root of 401312132 is about 737.6110763273.

Adding to 401312132 its reverse (231213104), we get a palindrome (632525236).

The spelling of 401312132 in words is "four hundred one million, three hundred twelve thousand, one hundred thirty-two".