1021310131 has 2 divisors, whose sum is σ = 1021310132. Its totient is φ = 1021310130.

The previous prime is 1021310113. The next prime is 1021310137. The reversal of 1021310131 is 1310131201.

Together with previous prime (1021310113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (1310131201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021310131 is a prime.

It is a super-2 number, since 2×1021310131² = 2086148767366474322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1021310137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510655065 + 510655066.

It is an arithmetic number, because the mean of its divisors is an integer number (510655066).

Almost surely, 2^1021310131 is an apocalyptic number.

1021310131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021310131 is an equidigital number, since it uses as much as digits as its factorization.

1021310131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1021310131 is about 31957.9431597217. The cubic root of 1021310131 is about 1007.0535080489.

Adding to 1021310131 its reverse (1310131201), we get a palindrome (2331441332).

The spelling of 1021310131 in words is "one billion, twenty-one million, three hundred ten thousand, one hundred thirty-one".