1013220231 has 4 divisors (see below), whose sum is σ = 1350960312. Its totient is φ = 675480152.

The previous prime is 1013220227. The next prime is 1013220253. The reversal of 1013220231 is 1320223101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1320223101 = 3 ⋅440074367.

It is a cyclic number.

It is not a de Polignac number, because 1013220231 - 2² = 1013220227 is a prime.

It is a super-2 number, since 2×1013220231² = 2053230473015386722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1013220231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013220211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168870036 + ... + 168870041.

It is an arithmetic number, because the mean of its divisors is an integer number (337740078).

Almost surely, 2^1013220231 is an apocalyptic number.

1013220231 is a deficient number, since it is larger than the sum of its proper divisors (337740081).

1013220231 is an equidigital number, since it uses as much as digits as its factorization.

1013220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337740080.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1013220231 is about 31831.1204798072. The cubic root of 1013220231 is about 1004.3874656591.

Adding to 1013220231 its reverse (1320223101), we get a palindrome (2333443332).

The spelling of 1013220231 in words is "one billion, thirteen million, two hundred twenty thousand, two hundred thirty-one".