1111021313 has 2 divisors, whose sum is σ = 1111021314. Its totient is φ = 1111021312.

The previous prime is 1111021267. The next prime is 1111021343. The reversal of 1111021313 is 3131201111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1090518529 + 20502784 = 33023^2 + 4528^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111021313 - 2²⁴ = 1094244097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111021343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555510656 + 555510657.

It is an arithmetic number, because the mean of its divisors is an integer number (555510657).

Almost surely, 2^1111021313 is an apocalyptic number.

It is an amenable number.

1111021313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111021313 is an equidigital number, since it uses as much as digits as its factorization.

1111021313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1111021313 is about 33331.9863344506. The cubic root of 1111021313 is about 1035.7162655386.

Adding to 1111021313 its reverse (3131201111), we get a palindrome (4242222424).

It can be divided in two parts, 11110 and 21313, that added together give a palindrome (32423).

The spelling of 1111021313 in words is "one billion, one hundred eleven million, twenty-one thousand, three hundred thirteen".