345172783 has 2 divisors, whose sum is σ = 345172784. Its totient is φ = 345172782.

The previous prime is 345172759. The next prime is 345172823. The reversal of 345172783 is 387271543.

It is a happy number.

It is an a-pointer prime, because the next prime (345172823) can be obtained adding 345172783 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345172783 - 2⁹ = 345172271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345172483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172586391 + 172586392.

It is an arithmetic number, because the mean of its divisors is an integer number (172586392).

Almost surely, 2^345172783 is an apocalyptic number.

345172783 is a deficient number, since it is larger than the sum of its proper divisors (1).

345172783 is an equidigital number, since it uses as much as digits as its factorization.

345172783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The square root of 345172783 is about 18578.8262008126. The cubic root of 345172783 is about 701.4749735662.

The spelling of 345172783 in words is "three hundred forty-five million, one hundred seventy-two thousand, seven hundred eighty-three".