1121313031 has 2 divisors, whose sum is σ = 1121313032. Its totient is φ = 1121313030.

The previous prime is 1121313007. The next prime is 1121313049. The reversal of 1121313031 is 1303131211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121313031 - 2⁹ = 1121312519 is a prime.

It is a super-2 number, since 2×1121313031² = 2514685826980813922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121312996 and 1121313014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121313001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560656515 + 560656516.

It is an arithmetic number, because the mean of its divisors is an integer number (560656516).

Almost surely, 2^1121313031 is an apocalyptic number.

1121313031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121313031 is an equidigital number, since it uses as much as digits as its factorization.

1121313031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1121313031 is about 33486.0124678947. The cubic root of 1121313031 is about 1038.9044896045.

Adding to 1121313031 its reverse (1303131211), we get a palindrome (2424444242).

The spelling of 1121313031 in words is "one billion, one hundred twenty-one million, three hundred thirteen thousand, thirty-one".