1293257107 has 2 divisors, whose sum is σ = 1293257108. Its totient is φ = 1293257106.

The previous prime is 1293257093. The next prime is 1293257111. The reversal of 1293257107 is 7017523921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1293257107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1293257177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646628553 + 646628554.

It is an arithmetic number, because the mean of its divisors is an integer number (646628554).

Almost surely, 2^1293257107 is an apocalyptic number.

1293257107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293257107 is an equidigital number, since it uses as much as digits as its factorization.

1293257107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 1293257107 is about 35961.8840857928. The cubic root of 1293257107 is about 1089.5026508061.

The spelling of 1293257107 in words is "one billion, two hundred ninety-three million, two hundred fifty-seven thousand, one hundred seven".