75423131 has 8 divisors (see below), whose sum is σ = 88527840. Its totient is φ = 62900928.

The previous prime is 75423121. The next prime is 75423133. The reversal of 75423131 is 13132457.

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

It is a cyclic number.

It is not a de Polignac number, because 75423131 - 2¹⁰ = 75422107 is a prime.

It is a super-2 number, since 2×75423131² = 11377297379686322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75423131.

It is not an unprimeable number, because it can be changed into a prime (75423133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145346 + ... + 145863.

It is an arithmetic number, because the mean of its divisors is an integer number (11065980).

Almost surely, 2^75423131 is an apocalyptic number.

75423131 is a deficient number, since it is larger than the sum of its proper divisors (13104709).

75423131 is a wasteful number, since it uses less digits than its factorization.

75423131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291253.

The product of its digits is 2520, while the sum is 26.

The square root of 75423131 is about 8684.6491581410. The cubic root of 75423131 is about 422.5079181084.

Adding to 75423131 its reverse (13132457), we get a palindrome (88555588).

The spelling of 75423131 in words is "seventy-five million, four hundred twenty-three thousand, one hundred thirty-one".