1345503131 has 16 divisors (see below), whose sum is σ = 1632590784. Its totient is φ = 1082502144.

The previous prime is 1345503017. The next prime is 1345503143. The reversal of 1345503131 is 1313055431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345503131 is a prime.

It is a super-2 number, since 2×1345503131² = 3620757351061606322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1345503131.

It is not an unprimeable number, because it can be changed into a prime (1345506131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29231 + ... + 59543.

It is an arithmetic number, because the mean of its divisors is an integer number (102036924).

Almost surely, 2^1345503131 is an apocalyptic number.

1345503131 is a deficient number, since it is larger than the sum of its proper divisors (287087653).

1345503131 is a wasteful number, since it uses less digits than its factorization.

1345503131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30710.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1345503131 is about 36681.1004605914. The cubic root of 1345503131 is about 1103.9809284298.

Adding to 1345503131 its reverse (1313055431), we get a palindrome (2658558562).

The spelling of 1345503131 in words is "one billion, three hundred forty-five million, five hundred three thousand, one hundred thirty-one".