401281343 has 4 divisors (see below), whose sum is σ = 401372520. Its totient is φ = 401190168.

The previous prime is 401281339. The next prime is 401281399. The reversal of 401281343 is 343182104.

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 401281343 - 2² = 401281339 is a prime.

It is a super-2 number, since 2×401281343² = 322053432479767298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401281303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38633 + ... + 47906.

It is an arithmetic number, because the mean of its divisors is an integer number (100343130).

Almost surely, 2^401281343 is an apocalyptic number.

401281343 is a deficient number, since it is larger than the sum of its proper divisors (91177).

401281343 is an equidigital number, since it uses as much as digits as its factorization.

401281343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91176.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 401281343 is about 20032.0079622588. The cubic root of 401281343 is about 737.5922124668.

The spelling of 401281343 in words is "four hundred one million, two hundred eighty-one thousand, three hundred forty-three".