1310121 has 8 divisors (see below), whose sum is σ = 1940960. Its totient is φ = 873396.

The previous prime is 1310119. The next prime is 1310123. The reversal of 1310121 is 1210131.

It is an interprime number because it is at equal distance from previous prime (1310119) and next prime (1310123).

It is not a de Polignac number, because 1310121 - 2¹ = 1310119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1310123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24235 + ... + 24288.

It is an arithmetic number, because the mean of its divisors is an integer number (242620).

2^1310121 is an apocalyptic number.

It is an amenable number.

1310121 is a deficient number, since it is larger than the sum of its proper divisors (630839).

1310121 is an equidigital number, since it uses as much as digits as its factorization.

1310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48532 (or 48526 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1310121 is about 1144.6051721008. The cubic root of 1310121 is about 109.4217868949.

Adding to 1310121 its reverse (1210131), we get a palindrome (2520252).

It can be divided in two parts, 1310 and 121, that added together give a triangular number (1431 = T₅₃).

The spelling of 1310121 in words is "one million, three hundred ten thousand, one hundred twenty-one".