345110021623 has 2 divisors, whose sum is σ = 345110021624. Its totient is φ = 345110021622.

The previous prime is 345110021609. The next prime is 345110021647. The reversal of 345110021623 is 326120011543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345110021623 - 2⁵ = 345110021591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345110021591 and 345110021600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345110081623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172555010811 + 172555010812.

It is an arithmetic number, because the mean of its divisors is an integer number (172555010812).

Almost surely, 2^345110021623 is an apocalyptic number.

345110021623 is a deficient number, since it is larger than the sum of its proper divisors (1).

345110021623 is an equidigital number, since it uses as much as digits as its factorization.

345110021623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 345110021623 in words is "three hundred forty-five billion, one hundred ten million, twenty-one thousand, six hundred twenty-three".