321700640231 has 8 divisors (see below), whose sum is σ = 333448999680. Its totient is φ = 310156600248.

The previous prime is 321700640227. The next prime is 321700640251. The reversal of 321700640231 is 132046007123.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321700640231 - 2² = 321700640227 is a prime.

It is a super-2 number, since 2×321700640231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321700640194 and 321700640203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321700640201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51076661 + ... + 51082958.

It is an arithmetic number, because the mean of its divisors is an integer number (41681124960).

Almost surely, 2^321700640231 is an apocalyptic number.

321700640231 is a deficient number, since it is larger than the sum of its proper divisors (11748359449).

321700640231 is a wasteful number, since it uses less digits than its factorization.

321700640231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102159733.

The product of its (nonzero) digits is 6048, while the sum is 29.

Adding to 321700640231 its reverse (132046007123), we get a palindrome (453746647354).

The spelling of 321700640231 in words is "three hundred twenty-one billion, seven hundred million, six hundred forty thousand, two hundred thirty-one".