1220031234 has 20 divisors (see below), whose sum is σ = 2733774054. Its totient is φ = 406677024.

The previous prime is 1220031209. The next prime is 1220031259. The reversal of 1220031234 is 4321300221.

It is an interprime number because it is at equal distance from previous prime (1220031209) and next prime (1220031259).

It can be written as a sum of positive squares in only one way, i.e., 627352209 + 592679025 = 25047^2 + 24345^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3765367 + ... + 3765690.

Almost surely, 2^1220031234 is an apocalyptic number.

1220031234 is an abundant number, since it is smaller than the sum of its proper divisors (1513742820).

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

1220031234 is an equidigital number, since it uses as much as digits as its factorization.

1220031234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7531071 (or 7531062 counting only the distinct ones).

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

The square root of 1220031234 is about 34928.9455036936. The cubic root of 1220031234 is about 1068.5388487753.

Adding to 1220031234 its reverse (4321300221), we get a palindrome (5541331455).

It can be divided in two parts, 12200 and 31234, that added together give a palindrome (43434).

The spelling of 1220031234 in words is "one billion, two hundred twenty million, thirty-one thousand, two hundred thirty-four".