1215320348 has 24 divisors (see below), whose sum is σ = 2352841344. Its totient is φ = 544636400.

The previous prime is 1215320347. The next prime is 1215320357. The reversal of 1215320348 is 8430235121.

It is a happy number.

It is a super-2 number, since 2×1215320348² = 2954007096525682208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1215320348.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215320347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191390 + ... + 197637.

It is an arithmetic number, because the mean of its divisors is an integer number (98035056).

Almost surely, 2^1215320348 is an apocalyptic number.

It is an amenable number.

1215320348 is a deficient number, since it is larger than the sum of its proper divisors (1137520996).

1215320348 is a wasteful number, since it uses less digits than its factorization.

1215320348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389113 (or 389111 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1215320348 is about 34861.4450073430. The cubic root of 1215320348 is about 1067.1617644770.

Adding to 1215320348 its reverse (8430235121), we get a palindrome (9645555469).

The spelling of 1215320348 in words is "one billion, two hundred fifteen million, three hundred twenty thousand, three hundred forty-eight".