70871619131 has 4 divisors (see below), whose sum is σ = 71141093232. Its totient is φ = 70602145032.

The previous prime is 70871619113. The next prime is 70871619139. The reversal of 70871619131 is 13191617807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13191617807 = 37 ⋅356530211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70871619131 is a prime.

It is a super-2 number, since 2×70871619131² (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 (70871619139) 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, 134736656 + ... + 134737181.

It is an arithmetic number, because the mean of its divisors is an integer number (17785273308).

Almost surely, 2^70871619131 is an apocalyptic number.

70871619131 is a deficient number, since it is larger than the sum of its proper divisors (269474101).

70871619131 is a wasteful number, since it uses less digits than its factorization.

70871619131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269474100.

The product of its (nonzero) digits is 63504, while the sum is 44.

The spelling of 70871619131 in words is "seventy billion, eight hundred seventy-one million, six hundred nineteen thousand, one hundred thirty-one".