1213265130 has 128 divisors (see below), whose sum is σ = 3640412160. Its totient is φ = 251408640.

The previous prime is 1213265099. The next prime is 1213265143. The reversal of 1213265130 is 315623121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213265130.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1521892 + ... + 1522688.

It is an arithmetic number, because the mean of its divisors is an integer number (28440720).

Almost surely, 2^1213265130 is an apocalyptic number.

1213265130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213265130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1820206080).

1213265130 is an abundant number, since it is smaller than the sum of its proper divisors (2427147030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213265130 is a wasteful number, since it uses less digits than its factorization.

1213265130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1213265130 is about 34831.9555867884. The cubic root of 1213265130 is about 1066.5598689733.

Adding to 1213265130 its reverse (315623121), we get a palindrome (1528888251).

The spelling of 1213265130 in words is "one billion, two hundred thirteen million, two hundred sixty-five thousand, one hundred thirty".