71231370 has 64 divisors (see below), whose sum is σ = 196079616. Its totient is φ = 16223040.

The previous prime is 71231359. The next prime is 71231423. The reversal of 71231370 is 7313217.

It is a self number, because there is not a number n which added to its sum of digits gives 71231370.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90117 + ... + 90903.

It is an arithmetic number, because the mean of its divisors is an integer number (3063744).

Almost surely, 2^71231370 is an apocalyptic number.

71231370 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 71231370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98039808).

71231370 is an abundant number, since it is smaller than the sum of its proper divisors (124848246).

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

71231370 is a wasteful number, since it uses less digits than its factorization.

71231370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235.

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 71231370 is about 8439.8678899613. The cubic root of 71231370 is about 414.5310811369.

Adding to 71231370 its reverse (7313217), we get a palindrome (78544587).

The spelling of 71231370 in words is "seventy-one million, two hundred thirty-one thousand, three hundred seventy".