1203151603 has 2 divisors, whose sum is σ = 1203151604. Its totient is φ = 1203151602.

The previous prime is 1203151561. The next prime is 1203151639. The reversal of 1203151603 is 3061513021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203151603 is a prime.

It is not a weakly prime, because it can be changed into another prime (1203151403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601575801 + 601575802.

It is an arithmetic number, because the mean of its divisors is an integer number (601575802).

Almost surely, 2^1203151603 is an apocalyptic number.

1203151603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203151603 is an equidigital number, since it uses as much as digits as its factorization.

1203151603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1203151603 is about 34686.4757938883. The cubic root of 1203151603 is about 1063.5880553689.

Adding to 1203151603 its reverse (3061513021), we get a palindrome (4264664624).

The spelling of 1203151603 in words is "one billion, two hundred three million, one hundred fifty-one thousand, six hundred three".