1315432331 has 16 divisors (see below), whose sum is σ = 1371617280. Its totient is φ = 1260178560.

The previous prime is 1315432309. The next prime is 1315432343. The reversal of 1315432331 is 1332345131.

It is a cyclic number.

It is not a de Polignac number, because 1315432331 - 2¹⁰ = 1315431307 is a prime.

It is a super-2 number, since 2×1315432331² = 3460724434880187122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315432331.

It is not an unprimeable number, because it can be changed into a prime (1315432351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2217971 + ... + 2218563.

It is an arithmetic number, because the mean of its divisors is an integer number (85726080).

Almost surely, 2^1315432331 is an apocalyptic number.

1315432331 is a deficient number, since it is larger than the sum of its proper divisors (56184949).

1315432331 is a wasteful number, since it uses less digits than its factorization.

1315432331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226.

The product of its digits is 3240, while the sum is 26.

The square root of 1315432331 is about 36268.8892992328. The cubic root of 1315432331 is about 1095.6945562584.

Adding to 1315432331 its reverse (1332345131), we get a palindrome (2647777462).

The spelling of 1315432331 in words is "one billion, three hundred fifteen million, four hundred thirty-two thousand, three hundred thirty-one".