401223311 has 4 divisors (see below), whose sum is σ = 401515224. Its totient is φ = 400931400.

The previous prime is 401223283. The next prime is 401223451. The reversal of 401223311 is 113322104.

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 401223311 - 2²² = 397029007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401223311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401223211) 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, 143885 + ... + 146646.

It is an arithmetic number, because the mean of its divisors is an integer number (100378806).

Almost surely, 2^401223311 is an apocalyptic number.

401223311 is a deficient number, since it is larger than the sum of its proper divisors (291913).

401223311 is a wasteful number, since it uses less digits than its factorization.

401223311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291912.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 401223311 is about 20030.5594280340. The cubic root of 401223311 is about 737.5566546920.

Adding to 401223311 its reverse (113322104), we get a palindrome (514545415).

The spelling of 401223311 in words is "four hundred one million, two hundred twenty-three thousand, three hundred eleven".