1031331113 has 2 divisors, whose sum is σ = 1031331114. Its totient is φ = 1031331112.

The previous prime is 1031331107. The next prime is 1031331131. The reversal of 1031331113 is 3111331301.

Together with next prime (1031331131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1001595904 + 29735209 = 31648^2 + 5453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031331113 - 2¹⁴ = 1031314729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031331091 and 1031331100.

It is not a weakly prime, because it can be changed into another prime (1031331173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515665556 + 515665557.

It is an arithmetic number, because the mean of its divisors is an integer number (515665557).

Almost surely, 2^1031331113 is an apocalyptic number.

It is an amenable number.

1031331113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031331113 is an equidigital number, since it uses as much as digits as its factorization.

1031331113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1031331113 is about 32114.3443495271. The cubic root of 1031331113 is about 1010.3364931158.

Adding to 1031331113 its reverse (3111331301), we get a palindrome (4142662414).

The spelling of 1031331113 in words is "one billion, thirty-one million, three hundred thirty-one thousand, one hundred thirteen".