1213611130 has 64 divisors (see below), whose sum is σ = 2468568960. Its totient is φ = 426829824.

The previous prime is 1213611107. The next prime is 1213611131. The reversal of 1213611130 is 311163121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 1213611098 and 1213611107.

It is not an unprimeable number, because it can be changed into a prime (1213611131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233217 + ... + 238363.

It is an arithmetic number, because the mean of its divisors is an integer number (38571390).

Almost surely, 2^1213611130 is an apocalyptic number.

1213611130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213611130 is an abundant number, since it is smaller than the sum of its proper divisors (1254957830).

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

1213611130 is a wasteful number, since it uses less digits than its factorization.

1213611130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1213611130 is about 34836.9219363594. The cubic root of 1213611130 is about 1066.6612468258.

Adding to 1213611130 its reverse (311163121), we get a palindrome (1524774251).

The spelling of 1213611130 in words is "one billion, two hundred thirteen million, six hundred eleven thousand, one hundred thirty".