1373315287 has 2 divisors, whose sum is σ = 1373315288. Its totient is φ = 1373315286.

The previous prime is 1373315227. The next prime is 1373315291. The reversal of 1373315287 is 7825133731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1373315287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1373315227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686657643 + 686657644.

It is an arithmetic number, because the mean of its divisors is an integer number (686657644).

Almost surely, 2^1373315287 is an apocalyptic number.

1373315287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373315287 is an equidigital number, since it uses as much as digits as its factorization.

1373315287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 1373315287 is about 37058.2688073795. The cubic root of 1373315287 is about 1111.5357059574.

The spelling of 1373315287 in words is "one billion, three hundred seventy-three million, three hundred fifteen thousand, two hundred eighty-seven".