1321403071 has 2 divisors, whose sum is σ = 1321403072. Its totient is φ = 1321403070.

The previous prime is 1321403033. The next prime is 1321403113. The reversal of 1321403071 is 1703041231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321403071 - 2¹⁷ = 1321271999 is a prime.

It is a super-2 number, since 2×1321403071² = 3492212152096462082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321803071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660701535 + 660701536.

It is an arithmetic number, because the mean of its divisors is an integer number (660701536).

Almost surely, 2^1321403071 is an apocalyptic number.

1321403071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321403071 is an equidigital number, since it uses as much as digits as its factorization.

1321403071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1321403071 is about 36351.1082499557. The cubic root of 1321403071 is about 1097.3498381632.

The spelling of 1321403071 in words is "one billion, three hundred twenty-one million, four hundred three thousand, seventy-one".