1220312034 has 32 divisors (see below), whose sum is σ = 2716035840. Its totient is φ = 406136016.

The previous prime is 1220312033. The next prime is 1220312047. The reversal of 1220312034 is 4302130221.

It is a super-2 number, since 2×1220312034² = 2978322920650434312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1220311998 and 1220312016.

It is not an unprimeable number, because it can be changed into a prime (1220312033) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17959 + ... + 52565.

It is an arithmetic number, because the mean of its divisors is an integer number (84876120).

Almost surely, 2^1220312034 is an apocalyptic number.

1220312034 is an abundant number, since it is smaller than the sum of its proper divisors (1495723806).

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

1220312034 is a wasteful number, since it uses less digits than its factorization.

1220312034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35271 (or 35265 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1220312034 is about 34932.9648612883. The cubic root of 1220312034 is about 1068.6208200899.

Adding to 1220312034 its reverse (4302130221), we get a palindrome (5522442255).

The spelling of 1220312034 in words is "one billion, two hundred twenty million, three hundred twelve thousand, thirty-four".