323129391667 has 2 divisors, whose sum is σ = 323129391668. Its totient is φ = 323129391666.

The previous prime is 323129391619. The next prime is 323129391671. The reversal of 323129391667 is 766193921323.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 323129391667 - 2¹⁹ = 323128867379 is a prime.

It is not a weakly prime, because it can be changed into another prime (323129391677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161564695833 + 161564695834.

It is an arithmetic number, because the mean of its divisors is an integer number (161564695834).

Almost surely, 2^323129391667 is an apocalyptic number.

323129391667 is a deficient number, since it is larger than the sum of its proper divisors (1).

323129391667 is an equidigital number, since it uses as much as digits as its factorization.

323129391667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 52.

The spelling of 323129391667 in words is "three hundred twenty-three billion, one hundred twenty-nine million, three hundred ninety-one thousand, six hundred sixty-seven".