1213311430 has 16 divisors (see below), whose sum is σ = 2210274864. Its totient is φ = 479476960.

The previous prime is 1213311427. The next prime is 1213311461. The reversal of 1213311430 is 341133121.

It is a junction number, because it is equal to n+sod(n) for n = 1213311398 and 1213311407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730081 + ... + 731740.

It is an arithmetic number, because the mean of its divisors is an integer number (138142179).

Almost surely, 2^1213311430 is an apocalyptic number.

1213311430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213311430 is a deficient number, since it is larger than the sum of its proper divisors (996963434).

1213311430 is a wasteful number, since it uses less digits than its factorization.

1213311430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461911.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1213311430 is about 34832.6202000366. The cubic root of 1213311430 is about 1066.5734359704.

Adding to 1213311430 its reverse (341133121), we get a palindrome (1554444551).

The spelling of 1213311430 in words is "one billion, two hundred thirteen million, three hundred eleven thousand, four hundred thirty".