131031113 has 2 divisors, whose sum is σ = 131031114. Its totient is φ = 131031112.

The previous prime is 131031091. The next prime is 131031127. The reversal of 131031113 is 311130131.

It is a happy number.

It is an a-pointer prime, because the next prime (131031127) can be obtained adding 131031113 to its sum of digits (14).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120714169 + 10316944 = 10987^2 + 3212^2 .

It is a cyclic number.

It is not a de Polignac number, because 131031113 - 2⁸ = 131030857 is a prime.

It is not a weakly prime, because it can be changed into another prime (131031133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515556 + 65515557.

It is an arithmetic number, because the mean of its divisors is an integer number (65515557).

Almost surely, 2^131031113 is an apocalyptic number.

It is an amenable number.

131031113 is a deficient number, since it is larger than the sum of its proper divisors (1).

131031113 is an equidigital number, since it uses as much as digits as its factorization.

131031113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 131031113 is about 11446.8822392825. The cubic root of 131031113 is about 507.9155120719.

Adding to 131031113 its reverse (311130131), we get a palindrome (442161244).

It can be divided in two parts, 1310 and 31113, that added together give a palindrome (32423).

The spelling of 131031113 in words is "one hundred thirty-one million, thirty-one thousand, one hundred thirteen".