1312213015 has 8 divisors (see below), whose sum is σ = 1575372960. Its totient is φ = 1049292192.

The previous prime is 1312213013. The next prime is 1312213031. The reversal of 1312213015 is 5103122131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312213015 - 2¹ = 1312213013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312212983 and 1312213001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312213013) 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, 47475 + ... + 69844.

It is an arithmetic number, because the mean of its divisors is an integer number (196921620).

Almost surely, 2^1312213015 is an apocalyptic number.

1312213015 is a deficient number, since it is larger than the sum of its proper divisors (263159945).

1312213015 is a wasteful number, since it uses less digits than its factorization.

1312213015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119561.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1312213015 is about 36224.4808796482. The cubic root of 1312213015 is about 1094.7999787550.

Adding to 1312213015 its reverse (5103122131), we get a palindrome (6415335146).

The spelling of 1312213015 in words is "one billion, three hundred twelve million, two hundred thirteen thousand, fifteen".