401311240243 has 8 divisors (see below), whose sum is σ = 408496798400. Its totient is φ = 394178323968.

The previous prime is 401311240171. The next prime is 401311240247. The reversal of 401311240243 is 342042113104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401311240243 is a prime.

It is a super-3 number, since 3×401311240243³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401311240247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13145088 + ... + 13175581.

It is an arithmetic number, because the mean of its divisors is an integer number (51062099800).

Almost surely, 2^401311240243 is an apocalyptic number.

401311240243 is a deficient number, since it is larger than the sum of its proper divisors (7185558157).

401311240243 is a wasteful number, since it uses less digits than its factorization.

401311240243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26320941.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 401311240243 its reverse (342042113104), we get a palindrome (743353353347).

The spelling of 401311240243 in words is "four hundred one billion, three hundred eleven million, two hundred forty thousand, two hundred forty-three".