71309106 has 32 divisors (see below), whose sum is σ = 172872000. Its totient is φ = 21608640.

The previous prime is 71309081. The next prime is 71309123. The reversal of 71309106 is 60190317.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 71309106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59431 + ... + 60618.

It is an arithmetic number, because the mean of its divisors is an integer number (5402250).

Almost surely, 2^71309106 is an apocalyptic number.

71309106 is an abundant number, since it is smaller than the sum of its proper divisors (101562894).

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

71309106 is a wasteful number, since it uses less digits than its factorization.

71309106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120071 (or 120065 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 71309106 is about 8444.4719195459. The cubic root of 71309106 is about 414.6818212440.

The spelling of 71309106 in words is "seventy-one million, three hundred nine thousand, one hundred six".