1031220001 has 4 divisors (see below), whose sum is σ = 1178537152. Its totient is φ = 883902852.

The previous prime is 1031219977. The next prime is 1031220059. The reversal of 1031220001 is 1000221301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1000221301 = 163 ⋅6136327.

It is not a de Polignac number, because 1031220001 - 2¹³ = 1031211809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031220001.

It is not an unprimeable number, because it can be changed into a prime (1031223001) 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 3 ways as a sum of consecutive naturals, for example, 73658565 + ... + 73658578.

It is an arithmetic number, because the mean of its divisors is an integer number (294634288).

Almost surely, 2^1031220001 is an apocalyptic number.

It is an amenable number.

1031220001 is a deficient number, since it is larger than the sum of its proper divisors (147317151).

1031220001 is an equidigital number, since it uses as much as digits as its factorization.

1031220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147317150.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1031220001 is about 32112.6143594694. The cubic root of 1031220001 is about 1010.3002084416.

Adding to 1031220001 its reverse (1000221301), we get a palindrome (2031441302).

The spelling of 1031220001 in words is "one billion, thirty-one million, two hundred twenty thousand, one".