1310232021 has 12 divisors (see below), whose sum is σ = 2032196832. Its totient is φ = 748703928.

The previous prime is 1310231999. The next prime is 1310232037. The reversal of 1310232021 is 1202320131.

It is not a de Polignac number, because 1310232021 - 2⁹ = 1310231509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310232071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4456425 + ... + 4456718.

It is an arithmetic number, because the mean of its divisors is an integer number (169349736).

Almost surely, 2^1310232021 is an apocalyptic number.

It is an amenable number.

1310232021 is a deficient number, since it is larger than the sum of its proper divisors (721964811).

1310232021 is an equidigital number, since it uses as much as digits as its factorization.

1310232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8913160 (or 8913153 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1310232021 is about 36197.1272478908. The cubic root of 1310232021 is about 1094.2487764580.

Adding to 1310232021 its reverse (1202320131), we get a palindrome (2512552152).

The spelling of 1310232021 in words is "one billion, three hundred ten million, two hundred thirty-two thousand, twenty-one".