1021313071 has 2 divisors, whose sum is σ = 1021313072. Its totient is φ = 1021313070.

The previous prime is 1021313047. The next prime is 1021313077. The reversal of 1021313071 is 1703131201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021313071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021313077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510656535 + 510656536.

It is an arithmetic number, because the mean of its divisors is an integer number (510656536).

Almost surely, 2^1021313071 is an apocalyptic number.

1021313071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021313071 is an equidigital number, since it uses as much as digits as its factorization.

1021313071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 1021313071 is about 31957.9891576426. The cubic root of 1021313071 is about 1007.0544743680.

Adding to 1021313071 its reverse (1703131201), we get a palindrome (2724444272).

The spelling of 1021313071 in words is "one billion, twenty-one million, three hundred thirteen thousand, seventy-one".