1303145523 has 32 divisors (see below), whose sum is σ = 2133043200. Its totient is φ = 782103168.

The previous prime is 1303145521. The next prime is 1303145539. The reversal of 1303145523 is 3255413031.

1303145523 is a `hidden beast` number, since 130 + 3 + 1 + 4 + 5 + 523 = 666.

It is not a de Polignac number, because 1303145523 - 2¹ = 1303145521 is a prime.

It is a super-2 number, since 2×1303145523² = 3396376508229887058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1303145521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51163 + ... + 72276.

It is an arithmetic number, because the mean of its divisors is an integer number (66657600).

Almost surely, 2^1303145523 is an apocalyptic number.

1303145523 is a deficient number, since it is larger than the sum of its proper divisors (829897677).

1303145523 is a wasteful number, since it uses less digits than its factorization.

1303145523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123488 (or 123482 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1303145523 is about 36099.1069557129. The cubic root of 1303145523 is about 1092.2724308211.

Adding to 1303145523 its reverse (3255413031), we get a palindrome (4558558554).

The spelling of 1303145523 in words is "one billion, three hundred three million, one hundred forty-five thousand, five hundred twenty-three".