113211313031 has 2 divisors, whose sum is σ = 113211313032. Its totient is φ = 113211313030.

The previous prime is 113211313003. The next prime is 113211313037. The reversal of 113211313031 is 130313112311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113211313031 - 2¹⁰ = 113211312007 is a prime.

It is a super-2 number, since 2×113211313031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113211312994 and 113211313012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113211313037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56605656515 + 56605656516.

It is an arithmetic number, because the mean of its divisors is an integer number (56605656516).

Almost surely, 2^113211313031 is an apocalyptic number.

113211313031 is a deficient number, since it is larger than the sum of its proper divisors (1).

113211313031 is an equidigital number, since it uses as much as digits as its factorization.

113211313031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 113211313031 its reverse (130313112311), we get a palindrome (243524425342).

The spelling of 113211313031 in words is "one hundred thirteen billion, two hundred eleven million, three hundred thirteen thousand, thirty-one".