1121031013 has 2 divisors, whose sum is σ = 1121031014. Its totient is φ = 1121031012.

The previous prime is 1121030993. The next prime is 1121031049. The reversal of 1121031013 is 3101301211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999634689 + 121396324 = 31617^2 + 11018^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121031013 - 2⁹ = 1121030501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121030984 and 1121031002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121031073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560515506 + 560515507.

It is an arithmetic number, because the mean of its divisors is an integer number (560515507).

Almost surely, 2^1121031013 is an apocalyptic number.

It is an amenable number.

1121031013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121031013 is an equidigital number, since it uses as much as digits as its factorization.

1121031013 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 13.

The square root of 1121031013 is about 33481.8012209618. The cubic root of 1121031013 is about 1038.8173850747.

Adding to 1121031013 its reverse (3101301211), we get a palindrome (4222332224).

The spelling of 1121031013 in words is "one billion, one hundred twenty-one million, thirty-one thousand, thirteen".