1031013221 has 8 divisors (see below), whose sum is σ = 1216310784. Its totient is φ = 855218160.

The previous prime is 1031013163. The next prime is 1031013241. The reversal of 1031013221 is 1223101301.

1031013221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1031013221 - 2¹⁸ = 1030751077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1031013196 and 1031013205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031013241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2375390 + ... + 2375823.

It is an arithmetic number, because the mean of its divisors is an integer number (152038848).

Almost surely, 2^1031013221 is an apocalyptic number.

It is an amenable number.

1031013221 is a deficient number, since it is larger than the sum of its proper divisors (185297563).

1031013221 is an equidigital number, since it uses as much as digits as its factorization.

1031013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4751251.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1031013221 is about 32109.3945909916. The cubic root of 1031013221 is about 1010.2326755382.

Adding to 1031013221 its reverse (1223101301), we get a palindrome (2254114522).

The spelling of 1031013221 in words is "one billion, thirty-one million, thirteen thousand, two hundred twenty-one".