1315431143 has 8 divisors (see below), whose sum is σ = 1429859088. Its totient is φ = 1202894784.

The previous prime is 1315431109. The next prime is 1315431149. The reversal of 1315431143 is 3411345131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1315431143 - 2⁸ = 1315430887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315431149) 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 7 ways as a sum of consecutive naturals, for example, 471446 + ... + 474227.

It is an arithmetic number, because the mean of its divisors is an integer number (178732386).

Almost surely, 2^1315431143 is an apocalyptic number.

1315431143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1315431143 is a deficient number, since it is larger than the sum of its proper divisors (114427945).

1315431143 is a wasteful number, since it uses less digits than its factorization.

1315431143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945793.

The product of its digits is 2160, while the sum is 26.

The square root of 1315431143 is about 36268.8729215563. The cubic root of 1315431143 is about 1095.6942264086.

Adding to 1315431143 its reverse (3411345131), we get a palindrome (4726776274).

The spelling of 1315431143 in words is "one billion, three hundred fifteen million, four hundred thirty-one thousand, one hundred forty-three".