401181321 has 4 divisors (see below), whose sum is σ = 534908432. Its totient is φ = 267454212.

The previous prime is 401181289. The next prime is 401181349. The reversal of 401181321 is 123181104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 401181321 - 2⁵ = 401181289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401180321) 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, 66863551 + ... + 66863556.

It is an arithmetic number, because the mean of its divisors is an integer number (133727108).

Almost surely, 2^401181321 is an apocalyptic number.

It is an amenable number.

401181321 is a deficient number, since it is larger than the sum of its proper divisors (133727111).

401181321 is a wasteful number, since it uses less digits than its factorization.

401181321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133727110.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 401181321 is about 20029.5112521499. The cubic root of 401181321 is about 737.5309241462.

The spelling of 401181321 in words is "four hundred one million, one hundred eighty-one thousand, three hundred twenty-one".