401331204611 has 4 divisors (see below), whose sum is σ = 401403275400. Its totient is φ = 401259133824.

The previous prime is 401331204557. The next prime is 401331204643. The reversal of 401331204611 is 116402133104.

It is a happy number.

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 401331204611 - 2²² = 401327010307 is a prime.

It is a super-2 number, since 2×401331204611² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401331201611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36027041 + ... + 36038178.

It is an arithmetic number, because the mean of its divisors is an integer number (100350818850).

Almost surely, 2^401331204611 is an apocalyptic number.

401331204611 is a deficient number, since it is larger than the sum of its proper divisors (72070789).

401331204611 is an equidigital number, since it uses as much as digits as its factorization.

401331204611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72070788.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 401331204611 its reverse (116402133104), we get a palindrome (517733337715).

The spelling of 401331204611 in words is "four hundred one billion, three hundred thirty-one million, two hundred four thousand, six hundred eleven".