1310112021 has 32 divisors (see below), whose sum is σ = 1905240960. Its totient is φ = 797423616.

The previous prime is 1310112019. The next prime is 1310112029. The reversal of 1310112021 is 1202110131.

It is not a de Polignac number, because 1310112021 - 2¹ = 1310112019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1310111988 and 1310112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310112029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 789825 + ... + 791481.

It is an arithmetic number, because the mean of its divisors is an integer number (59538780).

Almost surely, 2^1310112021 is an apocalyptic number.

It is an amenable number.

1310112021 is a deficient number, since it is larger than the sum of its proper divisors (595128939).

1310112021 is a wasteful number, since it uses less digits than its factorization.

1310112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1310112021 is about 36195.4696198295. The cubic root of 1310112021 is about 1094.2153691784.

Adding to 1310112021 its reverse (1202110131), we get a palindrome (2512222152).

The spelling of 1310112021 in words is "one billion, three hundred ten million, one hundred twelve thousand, twenty-one".