1310221013 has 16 divisors (see below), whose sum is σ = 1393291776. Its totient is φ = 1229437440.

The previous prime is 1310220959. The next prime is 1310221037. The reversal of 1310221013 is 3101220131.

It is a cyclic number.

It is not a de Polignac number, because 1310221013 - 2⁸ = 1310220757 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 (1310221043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648581 + ... + 650597.

It is an arithmetic number, because the mean of its divisors is an integer number (87080736).

Almost surely, 2^1310221013 is an apocalyptic number.

It is an amenable number.

1310221013 is a deficient number, since it is larger than the sum of its proper divisors (83070763).

1310221013 is a wasteful number, since it uses less digits than its factorization.

1310221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1310221013 is about 36196.9751913057. The cubic root of 1310221013 is about 1094.2457119818.

Adding to 1310221013 its reverse (3101220131), we get a palindrome (4411441144).

The spelling of 1310221013 in words is "one billion, three hundred ten million, two hundred twenty-one thousand, thirteen".