1310121133 has 4 divisors (see below), whose sum is σ = 1387187100. Its totient is φ = 1233055168.

The previous prime is 1310121103. The next prime is 1310121173. The reversal of 1310121133 is 3311210131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1086229764 + 223891369 = 32958^2 + 14963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310121133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310121103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38532958 + ... + 38532991.

It is an arithmetic number, because the mean of its divisors is an integer number (346796775).

Almost surely, 2^1310121133 is an apocalyptic number.

It is an amenable number.

1310121133 is a deficient number, since it is larger than the sum of its proper divisors (77065967).

1310121133 is an equidigital number, since it uses as much as digits as its factorization.

1310121133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77065966.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1310121133 is about 36195.5954917169. The cubic root of 1310121133 is about 1094.2179059761.

Adding to 1310121133 its reverse (3311210131), we get a palindrome (4621331264).

The spelling of 1310121133 in words is "one billion, three hundred ten million, one hundred twenty-one thousand, one hundred thirty-three".