71311160 has 64 divisors (see below), whose sum is σ = 167270400. Its totient is φ = 27331200.

The previous prime is 71311159. The next prime is 71311169. The reversal of 71311160 is 6111317.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71311169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162221 + ... + 162659.

It is an arithmetic number, because the mean of its divisors is an integer number (2613600).

Almost surely, 2^71311160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71311160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83635200).

71311160 is an abundant number, since it is smaller than the sum of its proper divisors (95959240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71311160 is a wasteful number, since it uses less digits than its factorization.

71311160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 608 counting only the distinct ones).

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

The square root of 71311160 is about 8444.5935366955. The cubic root of 71311160 is about 414.6858027284.

Adding to 71311160 its reverse (6111317), we get a palindrome (77422477).

The spelling of 71311160 in words is "seventy-one million, three hundred eleven thousand, one hundred sixty".