1215312470 has 16 divisors (see below), whose sum is σ = 2188105920. Its totient is φ = 486004224.

The previous prime is 1215312463. The next prime is 1215312481. The reversal of 1215312470 is 742135121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35126 + ... + 60534.

It is an arithmetic number, because the mean of its divisors is an integer number (136756620).

Almost surely, 2^1215312470 is an apocalyptic number.

1215312470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215312470 is a deficient number, since it is larger than the sum of its proper divisors (972793450).

1215312470 is a wasteful number, since it uses less digits than its factorization.

1215312470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30199.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1215312470 is about 34861.3320170070. The cubic root of 1215312470 is about 1067.1594586052.

Adding to 1215312470 its reverse (742135121), we get a palindrome (1957447591).

The spelling of 1215312470 in words is "one billion, two hundred fifteen million, three hundred twelve thousand, four hundred seventy".