1303121153 has 4 divisors (see below), whose sum is σ = 1303985088. Its totient is φ = 1302257220.

The previous prime is 1303121117. The next prime is 1303121159. The reversal of 1303121153 is 3511213031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1303121153 - 2¹⁴ = 1303104769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303121159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429701 + ... + 432722.

It is an arithmetic number, because the mean of its divisors is an integer number (325996272).

Almost surely, 2^1303121153 is an apocalyptic number.

It is an amenable number.

1303121153 is a deficient number, since it is larger than the sum of its proper divisors (863935).

1303121153 is an equidigital number, since it uses as much as digits as its factorization.

1303121153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863934.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1303121153 is about 36098.7694111586. The cubic root of 1303121153 is about 1092.2656219511.

Adding to 1303121153 its reverse (3511213031), we get a palindrome (4814334184).

The spelling of 1303121153 in words is "one billion, three hundred three million, one hundred twenty-one thousand, one hundred fifty-three".