667422314231 has 4 divisors (see below), whose sum is σ = 667434522000. Its totient is φ = 667410106464.

The previous prime is 667422314203. The next prime is 667422314249. The reversal of 667422314231 is 132413224766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667422314231 is a prime.

It is a super-2 number, since 2×667422314231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667422314291) 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, 6021506 + ... + 6131343.

It is an arithmetic number, because the mean of its divisors is an integer number (166858630500).

Almost surely, 2^667422314231 is an apocalyptic number.

667422314231 is a deficient number, since it is larger than the sum of its proper divisors (12207769).

667422314231 is a wasteful number, since it uses less digits than its factorization.

667422314231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12207768.

The product of its digits is 290304, while the sum is 41.

Adding to 667422314231 its reverse (132413224766), we get a palindrome (799835538997).

The spelling of 667422314231 in words is "six hundred sixty-seven billion, four hundred twenty-two million, three hundred fourteen thousand, two hundred thirty-one".