263402123 has 2 divisors, whose sum is σ = 263402124. Its totient is φ = 263402122.

The previous prime is 263402101. The next prime is 263402143. The reversal of 263402123 is 321204362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263402123 - 2¹² = 263398027 is a prime.

It is not a weakly prime, because it can be changed into another prime (263402143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131701061 + 131701062.

It is an arithmetic number, because the mean of its divisors is an integer number (131701062).

Almost surely, 2^263402123 is an apocalyptic number.

263402123 is a deficient number, since it is larger than the sum of its proper divisors (1).

263402123 is an equidigital number, since it uses as much as digits as its factorization.

263402123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 263402123 is about 16229.6679879781. The cubic root of 263402123 is about 641.0222295099.

Adding to 263402123 its reverse (321204362), we get a palindrome (584606485).

The spelling of 263402123 in words is "two hundred sixty-three million, four hundred two thousand, one hundred twenty-three".