71021130131 has 12 divisors (see below), whose sum is σ = 82908363672. Its totient is φ = 60660135648.

The previous prime is 71021130101. The next prime is 71021130143. The reversal of 71021130131 is 13103112017.

It is not a de Polignac number, because 71021130131 - 2¹⁴ = 71021113747 is a prime.

It is a super-2 number, since 2×71021130131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71021130101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2546930 + ... + 2574663.

It is an arithmetic number, because the mean of its divisors is an integer number (6909030306).

Almost surely, 2^71021130131 is an apocalyptic number.

71021130131 is a deficient number, since it is larger than the sum of its proper divisors (11887233541).

71021130131 is a wasteful number, since it uses less digits than its factorization.

71021130131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5121890 (or 5121883 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

Adding to 71021130131 its reverse (13103112017), we get a palindrome (84124242148).

The spelling of 71021130131 in words is "seventy-one billion, twenty-one million, one hundred thirty thousand, one hundred thirty-one".