1203421523 has 2 divisors, whose sum is σ = 1203421524. Its totient is φ = 1203421522.

The previous prime is 1203421493. The next prime is 1203421537. The reversal of 1203421523 is 3251243021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1203421523 - 2⁶ = 1203421459 is a prime.

It is not a weakly prime, because it can be changed into another prime (1203421543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601710761 + 601710762.

It is an arithmetic number, because the mean of its divisors is an integer number (601710762).

Almost surely, 2^1203421523 is an apocalyptic number.

1203421523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203421523 is an equidigital number, since it uses as much as digits as its factorization.

1203421523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1203421523 is about 34690.3664293129. The cubic root of 1203421523 is about 1063.6675860009.

Adding to 1203421523 its reverse (3251243021), we get a palindrome (4454664544).

The spelling of 1203421523 in words is "one billion, two hundred three million, four hundred twenty-one thousand, five hundred twenty-three".