1312220153 has 4 divisors (see below), whose sum is σ = 1324258980. Its totient is φ = 1300181328.

The previous prime is 1312220141. The next prime is 1312220197. The reversal of 1312220153 is 3510222131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3510222131 = 13 ⋅270017087.

It can be written as a sum of positive squares in 2 ways, for example, as 339591184 + 972628969 = 18428^2 + 31187^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312220153 - 2²⁸ = 1043784697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312220053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6019250 + ... + 6019467.

It is an arithmetic number, because the mean of its divisors is an integer number (331064745).

Almost surely, 2^1312220153 is an apocalyptic number.

It is an amenable number.

1312220153 is a deficient number, since it is larger than the sum of its proper divisors (12038827).

1312220153 is a wasteful number, since it uses less digits than its factorization.

1312220153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12038826.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1312220153 is about 36224.5794040455. The cubic root of 1312220153 is about 1094.8019638666.

Adding to 1312220153 its reverse (3510222131), we get a palindrome (4822442284).

The spelling of 1312220153 in words is "one billion, three hundred twelve million, two hundred twenty thousand, one hundred fifty-three".