71131050 has 72 divisors (see below), whose sum is σ = 197308800. Its totient is φ = 18352800.

The previous prime is 71131037. The next prime is 71131051. The reversal of 71131050 is 5013117.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (71131051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11401 + ... + 16499.

It is an arithmetic number, because the mean of its divisors is an integer number (2740400).

Almost surely, 2^71131050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71131050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98654400).

71131050 is an abundant number, since it is smaller than the sum of its proper divisors (126177750).

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

71131050 is a wasteful number, since it uses less digits than its factorization.

71131050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5148 (or 5140 counting only the distinct ones).

The product of its (nonzero) digits is 105, while the sum is 18.

The square root of 71131050 is about 8433.9225749351. The cubic root of 71131050 is about 414.3363855693.

Adding to 71131050 its reverse (5013117), we get a palindrome (76144167).

The spelling of 71131050 in words is "seventy-one million, one hundred thirty-one thousand, fifty".