71430113 has 4 divisors (see below), whose sum is σ = 71459988. Its totient is φ = 71400240.

The previous prime is 71430109. The next prime is 71430119. The reversal of 71430113 is 31103417.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48553024 + 22877089 = 6968^2 + 4783^2 .

It is a cyclic number.

It is not a de Polignac number, because 71430113 - 2² = 71430109 is a prime.

It is a super-2 number, since 2×71430113² = 10204522086385538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71430119) 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, 11006 + ... + 16247.

It is an arithmetic number, because the mean of its divisors is an integer number (17864997).

Almost surely, 2^71430113 is an apocalyptic number.

It is an amenable number.

71430113 is a deficient number, since it is larger than the sum of its proper divisors (29875).

71430113 is a wasteful number, since it uses less digits than its factorization.

71430113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29874.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 71430113 is about 8451.6337473887. The cubic root of 71430113 is about 414.9162515477.

The spelling of 71430113 in words is "seventy-one million, four hundred thirty thousand, one hundred thirteen".