1220311134 has 48 divisors (see below), whose sum is σ = 3103402848. Its totient is φ = 339235776.

The previous prime is 1220311121. The next prime is 1220311159. The reversal of 1220311134 is 4311130221.

1220311134 is a `hidden beast` number, since 1 + 220 + 311 + 134 = 666.

1220311134 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126217 + ... + 135540.

It is an arithmetic number, because the mean of its divisors is an integer number (64654226).

Almost surely, 2^1220311134 is an apocalyptic number.

1220311134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1220311134 is an abundant number, since it is smaller than the sum of its proper divisors (1883091714).

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

1220311134 is a wasteful number, since it uses less digits than its factorization.

1220311134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261809 (or 261806 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1220311134 is about 34932.9519794706. The cubic root of 1220311134 is about 1068.6205573815.

Adding to 1220311134 its reverse (4311130221), we get a palindrome (5531441355).

The spelling of 1220311134 in words is "one billion, two hundred twenty million, three hundred eleven thousand, one hundred thirty-four".