1213012430 has 32 divisors (see below), whose sum is σ = 2497037760. Its totient is φ = 415607040.

The previous prime is 1213012397. The next prime is 1213012439. The reversal of 1213012430 is 342103121.

It is a junction number, because it is equal to n+sod(n) for n = 1213012399 and 1213012408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213012439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115436 + ... + 125504.

It is an arithmetic number, because the mean of its divisors is an integer number (78032430).

Almost surely, 2^1213012430 is an apocalyptic number.

1213012430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213012430 is an abundant number, since it is smaller than the sum of its proper divisors (1284025330).

1213012430 is a wasteful number, since it uses less digits than its factorization.

1213012430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11804.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1213012430 is about 34828.3279816876. The cubic root of 1213012430 is about 1066.4858158016.

Adding to 1213012430 its reverse (342103121), we get a palindrome (1555115551).

The spelling of 1213012430 in words is "one billion, two hundred thirteen million, twelve thousand, four hundred thirty".