321145402671 has 8 divisors (see below), whose sum is σ = 475770966960. Its totient is φ = 214096935096.

The previous prime is 321145402667. The next prime is 321145402709. The reversal of 321145402671 is 176204541123.

321145402671 is a `hidden beast` number, since 3 + 21 + 1 + 4 + 540 + 26 + 71 = 666.

It is not a de Polignac number, because 321145402671 - 2² = 321145402667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321145402651) 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, 5947137060 + ... + 5947137113.

It is an arithmetic number, because the mean of its divisors is an integer number (59471370870).

Almost surely, 2^321145402671 is an apocalyptic number.

321145402671 is a deficient number, since it is larger than the sum of its proper divisors (154625564289).

321145402671 is a wasteful number, since it uses less digits than its factorization.

321145402671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11894274182 (or 11894274176 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 321145402671 its reverse (176204541123), we get a palindrome (497349943794).

The spelling of 321145402671 in words is "three hundred twenty-one billion, one hundred forty-five million, four hundred two thousand, six hundred seventy-one".