1313020071 has 32 divisors (see below), whose sum is σ = 2124080640. Its totient is φ = 795009600.

The previous prime is 1313020031. The next prime is 1313020127. The reversal of 1313020071 is 1700203131.

It is not a de Polignac number, because 1313020071 - 2¹¹ = 1313018023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313020031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 567006 + ... + 569316.

It is an arithmetic number, because the mean of its divisors is an integer number (66377520).

Almost surely, 2^1313020071 is an apocalyptic number.

1313020071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1313020071 is a deficient number, since it is larger than the sum of its proper divisors (811060569).

1313020071 is a wasteful number, since it uses less digits than its factorization.

1313020071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244 (or 4238 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 1313020071 is about 36235.6188162973. The cubic root of 1313020071 is about 1095.0243792658.

The spelling of 1313020071 in words is "one billion, three hundred thirteen million, twenty thousand, seventy-one".