1315742431 has 2 divisors, whose sum is σ = 1315742432. Its totient is φ = 1315742430.

The previous prime is 1315742401. The next prime is 1315742443. The reversal of 1315742431 is 1342475131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1315742431 - 2¹⁹ = 1315218143 is a prime.

It is a super-3 number, since 3×1315742431³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1315742393 and 1315742402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315742401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657871215 + 657871216.

It is an arithmetic number, because the mean of its divisors is an integer number (657871216).

Almost surely, 2^1315742431 is an apocalyptic number.

1315742431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315742431 is an equidigital number, since it uses as much as digits as its factorization.

1315742431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 1315742431 is about 36273.1640610521. The cubic root of 1315742431 is about 1095.7806491669.

The spelling of 1315742431 in words is "one billion, three hundred fifteen million, seven hundred forty-two thousand, four hundred thirty-one".