75671231 has 4 divisors (see below), whose sum is σ = 75688632. Its totient is φ = 75653832.

The previous prime is 75671221. The next prime is 75671251. The reversal of 75671231 is 13217657.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13217657 = 89 ⋅148513.

It is a cyclic number.

It is not a de Polignac number, because 75671231 - 2¹⁴ = 75654847 is a prime.

It is a super-2 number, since 2×75671231² = 11452270402110722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75671201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4145 + ... + 12981.

It is an arithmetic number, because the mean of its divisors is an integer number (18922158).

Almost surely, 2^75671231 is an apocalyptic number.

75671231 is a deficient number, since it is larger than the sum of its proper divisors (17401).

75671231 is an equidigital number, since it uses as much as digits as its factorization.

75671231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17400.

The product of its digits is 8820, while the sum is 32.

The square root of 75671231 is about 8698.9212549603. The cubic root of 75671231 is about 422.9706828022.

Adding to 75671231 its reverse (13217657), we get a palindrome (88888888).

The spelling of 75671231 in words is "seventy-five million, six hundred seventy-one thousand, two hundred thirty-one".