1220031043 has 16 divisors (see below), whose sum is σ = 1529498880. Its totient is φ = 945410400.

The previous prime is 1220031041. The next prime is 1220031053. The reversal of 1220031043 is 3401300221.

It is a happy number.

It is not a de Polignac number, because 1220031043 - 2¹ = 1220031041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220031041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29833 + ... + 57706.

It is an arithmetic number, because the mean of its divisors is an integer number (95593680).

Almost surely, 2^1220031043 is an apocalyptic number.

1220031043 is a deficient number, since it is larger than the sum of its proper divisors (309467837).

1220031043 is a wasteful number, since it uses less digits than its factorization.

1220031043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87738.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1220031043 is about 34928.9427695715. The cubic root of 1220031043 is about 1068.5387930142.

Adding to 1220031043 its reverse (3401300221), we get a palindrome (4621331264).

The spelling of 1220031043 in words is "one billion, two hundred twenty million, thirty-one thousand, forty-three".