401312112 has 80 divisors (see below), whose sum is σ = 1075074048. Its totient is φ = 128862720.

The previous prime is 401312089. The next prime is 401312113. The reversal of 401312112 is 211213104.

It is a super-2 number, since 2×401312112² = 322102822475801088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401312091 and 401312100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401312113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420628 + ... + 421580.

Almost surely, 2^401312112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401312112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537537024).

401312112 is an abundant number, since it is smaller than the sum of its proper divisors (673761936).

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

401312112 is a wasteful number, since it uses less digits than its factorization.

401312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 401312112 is about 20032.7759434383. The cubic root of 401312112 is about 737.6110640740.

Adding to 401312112 its reverse (211213104), we get a palindrome (612525216).

The spelling of 401312112 in words is "four hundred one million, three hundred twelve thousand, one hundred twelve".