1310023121 has 16 divisors (see below), whose sum is σ = 1506653568. Its totient is φ = 1127385600.

The previous prime is 1310023063. The next prime is 1310023159. The reversal of 1310023121 is 1213200131.

It is not a de Polignac number, because 1310023121 - 2¹⁰ = 1310022097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310023096 and 1310023105.

It is not an unprimeable number, because it can be changed into a prime (1310023171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2150 + ... + 51231.

It is an arithmetic number, because the mean of its divisors is an integer number (94165848).

Almost surely, 2^1310023121 is an apocalyptic number.

1310023121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1310023121 is a deficient number, since it is larger than the sum of its proper divisors (196630447).

1310023121 is a wasteful number, since it uses less digits than its factorization.

1310023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53512.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1310023121 is about 36194.2415447540. The cubic root of 1310023121 is about 1094.1906186367.

Adding to 1310023121 its reverse (1213200131), we get a palindrome (2523223252).

The spelling of 1310023121 in words is "one billion, three hundred ten million, twenty-three thousand, one hundred twenty-one".