1310001971 has 2 divisors, whose sum is σ = 1310001972. Its totient is φ = 1310001970.

The previous prime is 1310001943. The next prime is 1310002019. The reversal of 1310001971 is 1791000131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1310001971 - 2³⁰ = 236260147 is a prime.

It is a super-2 number, since 2×1310001971² = 3432210328047769682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1310001871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655000985 + 655000986.

It is an arithmetic number, because the mean of its divisors is an integer number (655000986).

Almost surely, 2^1310001971 is an apocalyptic number.

1310001971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310001971 is an equidigital number, since it uses as much as digits as its factorization.

1310001971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189, while the sum is 23.

The square root of 1310001971 is about 36193.9493700259. The cubic root of 1310001971 is about 1094.1847301259.

The spelling of 1310001971 in words is "one billion, three hundred ten million, one thousand, nine hundred seventy-one".