71850231 has 6 divisors (see below), whose sum is σ = 103783680. Its totient is φ = 47900148.

The previous prime is 71850227. The next prime is 71850239. The reversal of 71850231 is 13205817.

It is not a de Polignac number, because 71850231 - 2² = 71850227 is a prime.

It is a super-2 number, since 2×71850231² = 10324911389506722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71850195 and 71850204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71850239) 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 5 ways as a sum of consecutive naturals, for example, 3991671 + ... + 3991688.

It is an arithmetic number, because the mean of its divisors is an integer number (17297280).

Almost surely, 2^71850231 is an apocalyptic number.

71850231 is a deficient number, since it is larger than the sum of its proper divisors (31933449).

71850231 is a wasteful number, since it uses less digits than its factorization.

71850231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7983365 (or 7983362 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 71850231 is about 8476.4515571081. The cubic root of 71850231 is about 415.7281087468.

The spelling of 71850231 in words is "seventy-one million, eight hundred fifty thousand, two hundred thirty-one".