71512923 has 8 divisors (see below), whose sum is σ = 96913936. Its totient is φ = 46893600.

The previous prime is 71512921. The next prime is 71512937. The reversal of 71512923 is 32921517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71512923 - 2¹ = 71512921 is a prime.

It is a super-2 number, since 2×71512923² = 10228196312007858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71512921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195208 + ... + 195573.

It is an arithmetic number, because the mean of its divisors is an integer number (12114242).

Almost surely, 2^71512923 is an apocalyptic number.

71512923 is a deficient number, since it is larger than the sum of its proper divisors (25401013).

71512923 is a wasteful number, since it uses less digits than its factorization.

71512923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390845.

The product of its digits is 3780, while the sum is 30.

The square root of 71512923 is about 8456.5313811278. The cubic root of 71512923 is about 415.0765291681.

It can be divided in two parts, 7 and 1512923, that added together give a triangular number (1512930 = T₁₇₃₉).

The spelling of 71512923 in words is "seventy-one million, five hundred twelve thousand, nine hundred twenty-three".