1293931 has 2 divisors, whose sum is σ = 1293932. Its totient is φ = 1293930.

The previous prime is 1293923. The next prime is 1293947. The reversal of 1293931 is 1393921.

It is a weak prime.

It is an emirp because it is prime and its reverse (1393921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1293931 - 2³ = 1293923 is a prime.

It is a super-2 number, since 2×1293931² = 3348514865522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1293931.

It is not a weakly prime, because it can be changed into another prime (1293961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646965 + 646966.

It is an arithmetic number, because the mean of its divisors is an integer number (646966).

2^1293931 is an apocalyptic number.

1293931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293931 is an equidigital number, since it uses as much as digits as its factorization.

1293931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458, while the sum is 28.

The square root of 1293931 is about 1137.5108790689. The cubic root of 1293931 is about 108.9691858019.

The spelling of 1293931 in words is "one million, two hundred ninety-three thousand, nine hundred thirty-one".