263105123430 has 32 divisors (see below), whose sum is σ = 634209746400. Its totient is φ = 69854982912.

The previous prime is 263105123401. The next prime is 263105123483. The reversal of 263105123430 is 34321501362.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 19141975 + ... + 19155714.

It is an arithmetic number, because the mean of its divisors is an integer number (19819054575).

Almost surely, 2^263105123430 is an apocalyptic number.

263105123430 is an abundant number, since it is smaller than the sum of its proper divisors (371104622970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263105123430 is a wasteful number, since it uses less digits than its factorization.

263105123430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38297928.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 263105123430 its reverse (34321501362), we get a palindrome (297426624792).

The spelling of 263105123430 in words is "two hundred sixty-three billion, one hundred five million, one hundred twenty-three thousand, four hundred thirty".