1215310130 has 32 divisors (see below), whose sum is σ = 2216516400. Its totient is φ = 479711232.

The previous prime is 1215310111. The next prime is 1215310157. The reversal of 1215310130 is 310135121.

It can be written as a sum of positive squares in 8 ways, for example, as 635897089 + 579413041 = 25217^2 + 24071^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1215310099 and 1215310108.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 597956 + ... + 599984.

Almost surely, 2^1215310130 is an apocalyptic number.

1215310130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215310130 is a deficient number, since it is larger than the sum of its proper divisors (1001206270).

1215310130 is a wasteful number, since it uses less digits than its factorization.

1215310130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1215310130 is about 34861.2984554506. The cubic root of 1215310130 is about 1067.1587736909.

Adding to 1215310130 its reverse (310135121), we get a palindrome (1525445251).

The spelling of 1215310130 in words is "one billion, two hundred fifteen million, three hundred ten thousand, one hundred thirty".