75331 has 4 divisors (see below), whose sum is σ = 76464. Its totient is φ = 74200.

The previous prime is 75329. The next prime is 75337. The reversal of 75331 is 13357.

75331 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75331 - 2¹ = 75329 is a prime.

It is a super-2 number, since 2×75331² = 11349519122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 75299 and 75308.

It is not an unprimeable number, because it can be changed into a prime (75337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460 + ... + 601.

It is an arithmetic number, because the mean of its divisors is an integer number (19116).

2⁷⁵³³¹ is an apocalyptic number.

75331 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

75331 is a deficient number, since it is larger than the sum of its proper divisors (1133).

75331 is a wasteful number, since it uses less digits than its factorization.

75331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132.

The product of its digits is 315, while the sum is 19.

The square root of 75331 is about 274.4649340080. The cubic root of 75331 is about 42.2335813800.

Adding to 75331 its reverse (13357), we get a palindrome (88688).

It can be divided in two parts, 753 and 31, that added together give a square (784 = 28²).

The spelling of 75331 in words is "seventy-five thousand, three hundred thirty-one".