1361687123 has 2 divisors, whose sum is σ = 1361687124. Its totient is φ = 1361687122.

The previous prime is 1361687099. The next prime is 1361687143. The reversal of 1361687123 is 3217861631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1361687123 - 2¹⁸ = 1361424979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1361687143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680843561 + 680843562.

It is an arithmetic number, because the mean of its divisors is an integer number (680843562).

Almost surely, 2^1361687123 is an apocalyptic number.

1361687123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361687123 is an equidigital number, since it uses as much as digits as its factorization.

1361687123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 1361687123 is about 36901.0450123028. The cubic root of 1361687123 is about 1108.3896034496.

The spelling of 1361687123 in words is "one billion, three hundred sixty-one million, six hundred eighty-seven thousand, one hundred twenty-three".