263378723 has 2 divisors, whose sum is σ = 263378724. Its totient is φ = 263378722.

The previous prime is 263378701. The next prime is 263378737. The reversal of 263378723 is 327873362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263378723 - 2¹² = 263374627 is a prime.

It is a super-2 number, since 2×263378723² = 138736703458221458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (263378023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131689361 + 131689362.

It is an arithmetic number, because the mean of its divisors is an integer number (131689362).

Almost surely, 2^263378723 is an apocalyptic number.

263378723 is a deficient number, since it is larger than the sum of its proper divisors (1).

263378723 is an equidigital number, since it uses as much as digits as its factorization.

263378723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 41.

The square root of 263378723 is about 16228.9470699735. The cubic root of 263378723 is about 641.0032466657.

The spelling of 263378723 in words is "two hundred sixty-three million, three hundred seventy-eight thousand, seven hundred twenty-three".