10231021305 has 40 divisors (see below), whose sum is σ = 18787401864. Its totient is φ = 5323449600.

The previous prime is 10231021303. The next prime is 10231021309. The reversal of 10231021305 is 50312013201.

It can be written as a sum of positive squares in 4 ways, for example, as 945193536 + 9285827769 = 30744^2 + 96363^2 .

It is not a de Polignac number, because 10231021305 - 2¹ = 10231021303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10231021301) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 291466 + ... + 324675.

Almost surely, 2^10231021305 is an apocalyptic number.

10231021305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10231021305 is a deficient number, since it is larger than the sum of its proper divisors (8556380559).

10231021305 is an equidigital number, since it uses as much as digits as its factorization.

10231021305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616199 (or 616190 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 10231021305 its reverse (50312013201), we get a palindrome (60543034506).

The spelling of 10231021305 in words is "ten billion, two hundred thirty-one million, twenty-one thousand, three hundred five".