71003120131 has 4 divisors (see below), whose sum is σ = 71006596992. Its totient is φ = 70999643272.

The previous prime is 71003120051. The next prime is 71003120203. The reversal of 71003120131 is 13102130017.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71003120131 - 2⁷ = 71003120003 is a prime.

It is a super-2 number, since 2×71003120131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71003120099 and 71003120108.

It is not an unprimeable number, because it can be changed into a prime (71003120831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1707616 + ... + 1748701.

It is an arithmetic number, because the mean of its divisors is an integer number (17751649248).

Almost surely, 2^71003120131 is an apocalyptic number.

71003120131 is a deficient number, since it is larger than the sum of its proper divisors (3476861).

71003120131 is a wasteful number, since it uses less digits than its factorization.

71003120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476860.

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

Adding to 71003120131 its reverse (13102130017), we get a palindrome (84105250148).

The spelling of 71003120131 in words is "seventy-one billion, three million, one hundred twenty thousand, one hundred thirty-one".