1220312434 has 16 divisors (see below), whose sum is σ = 2002329216. Its totient is φ = 553172400.

The previous prime is 1220312407. The next prime is 1220312459. The reversal of 1220312434 is 4342130221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67497 + ... + 83644.

It is an arithmetic number, because the mean of its divisors is an integer number (125145576).

Almost surely, 2^1220312434 is an apocalyptic number.

1220312434 is a deficient number, since it is larger than the sum of its proper divisors (782016782).

1220312434 is a wasteful number, since it uses less digits than its factorization.

1220312434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151521.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1220312434 is about 34932.9705865390. The cubic root of 1220312434 is about 1068.6209368492.

Adding to 1220312434 its reverse (4342130221), we get a palindrome (5562442655).

The spelling of 1220312434 in words is "one billion, two hundred twenty million, three hundred twelve thousand, four hundred thirty-four".