1310120002 has 4 divisors (see below), whose sum is σ = 1965180006. Its totient is φ = 655060000.

The previous prime is 1310119981. The next prime is 1310120003. The reversal of 1310120002 is 2000210131.

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

It can be written as a sum of positive squares in only one way, i.e., 880843041 + 429276961 = 29679^2 + 20719^2 .

It is not an unprimeable number, because it can be changed into a prime (1310120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327529999 + ... + 327530002.

Almost surely, 2^1310120002 is an apocalyptic number.

1310120002 is a deficient number, since it is larger than the sum of its proper divisors (655060004).

1310120002 is an equidigital number, since it uses as much as digits as its factorization.

1310120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655060003.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1310120002 is about 36195.5798682657. The cubic root of 1310120002 is about 1094.2175911042.

Adding to 1310120002 its reverse (2000210131), we get a palindrome (3310330133).

The spelling of 1310120002 in words is "one billion, three hundred ten million, one hundred twenty thousand, two".