401240343311 has 32 divisors (see below), whose sum is σ = 432167178240. Its totient is φ = 371792332800.

The previous prime is 401240343299. The next prime is 401240343341. The reversal of 401240343311 is 113343042104.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401240343311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401240343341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46984880 + ... + 46993418.

It is an arithmetic number, because the mean of its divisors is an integer number (13505224320).

Almost surely, 2^401240343311 is an apocalyptic number.

401240343311 is a deficient number, since it is larger than the sum of its proper divisors (30926834929).

401240343311 is a wasteful number, since it uses less digits than its factorization.

401240343311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9255.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 401240343311 its reverse (113343042104), we get a palindrome (514583385415).

The spelling of 401240343311 in words is "four hundred one billion, two hundred forty million, three hundred forty-three thousand, three hundred eleven".