2145315203203 has 2 divisors, whose sum is σ = 2145315203204. Its totient is φ = 2145315203202.

The previous prime is 2145315203197. The next prime is 2145315203231. The reversal of 2145315203203 is 3023025135412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145315203203 - 2¹³ = 2145315195011 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145315203243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072657601601 + 1072657601602.

It is an arithmetic number, because the mean of its divisors is an integer number (1072657601602).

Almost surely, 2^{2145315203203} is an apocalyptic number.

2145315203203 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145315203203 is an equidigital number, since it uses as much as digits as its factorization.

2145315203203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 2145315203203 in words is "two trillion, one hundred forty-five billion, three hundred fifteen million, two hundred three thousand, two hundred three".