401403203312 has 80 divisors (see below), whose sum is σ = 844352957952. Its totient is φ = 184113315840.

The previous prime is 401403203291. The next prime is 401403203323. The reversal of 401403203312 is 213302304104.

It is a super-2 number, since 2×401403203312² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 12105668 + ... + 12138780.

Almost surely, 2^401403203312 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 401403203312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422176478976).

401403203312 is an abundant number, since it is smaller than the sum of its proper divisors (442949754640).

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

401403203312 is a wasteful number, since it uses less digits than its factorization.

401403203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34266 (or 34260 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 401403203312 its reverse (213302304104), we get a palindrome (614705507416).

The spelling of 401403203312 in words is "four hundred one billion, four hundred three million, two hundred three thousand, three hundred twelve".