75031313 has 8 divisors (see below), whose sum is σ = 89478528. Its totient is φ = 61516224.

The previous prime is 75031283. The next prime is 75031321. The reversal of 75031313 is 31313057.

It is a happy number.

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

It is not a de Polignac number, because 75031313 - 2¹⁶ = 74965777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75031393) 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, 232856 + ... + 233177.

It is an arithmetic number, because the mean of its divisors is an integer number (11184816).

Almost surely, 2^75031313 is an apocalyptic number.

It is an amenable number.

75031313 is a deficient number, since it is larger than the sum of its proper divisors (14447215).

75031313 is a wasteful number, since it uses less digits than its factorization.

75031313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466063.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 75031313 is about 8662.0617060836. The cubic root of 75031313 is about 421.7750142784.

The spelling of 75031313 in words is "seventy-five million, thirty-one thousand, three hundred thirteen".