345157823 has 2 divisors, whose sum is σ = 345157824. Its totient is φ = 345157822.

The previous prime is 345157807. The next prime is 345157829. The reversal of 345157823 is 328751543.

It is a strong prime.

It is an emirp because it is prime and its reverse (328751543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345157823 - 2⁴ = 345157807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345157829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172578911 + 172578912.

It is an arithmetic number, because the mean of its divisors is an integer number (172578912).

Almost surely, 2^345157823 is an apocalyptic number.

345157823 is a deficient number, since it is larger than the sum of its proper divisors (1).

345157823 is an equidigital number, since it uses as much as digits as its factorization.

345157823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 38.

The square root of 345157823 is about 18578.4235875921. The cubic root of 345157823 is about 701.4648393014.

The spelling of 345157823 in words is "three hundred forty-five million, one hundred fifty-seven thousand, eight hundred twenty-three".