152323991 has 2 divisors, whose sum is σ = 152323992. Its totient is φ = 152323990.

The previous prime is 152323981. The next prime is 152323999. The reversal of 152323991 is 199323251.

It is a strong prime.

It is an emirp because it is prime and its reverse (199323251) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152323991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152323999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76161995 + 76161996.

It is an arithmetic number, because the mean of its divisors is an integer number (76161996).

Almost surely, 2^152323991 is an apocalyptic number.

152323991 is a deficient number, since it is larger than the sum of its proper divisors (1).

152323991 is an equidigital number, since it uses as much as digits as its factorization.

152323991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 152323991 is about 12341.9605816904. The cubic root of 152323991 is about 534.0592440360.

The spelling of 152323991 in words is "one hundred fifty-two million, three hundred twenty-three thousand, nine hundred ninety-one".