751312913 has 4 divisors (see below), whose sum is σ = 809106228. Its totient is φ = 693519600.

The previous prime is 751312901. The next prime is 751312967. The reversal of 751312913 is 319213157.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 319213157 = 8753 ⋅36469.

It can be written as a sum of positive squares in 2 ways, for example, as 30283009 + 721029904 = 5503^2 + 26852^2 .

It is a cyclic number.

It is not a de Polignac number, because 751312913 - 2⁴ = 751312897 is a prime.

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 751312913.

It is not an unprimeable number, because it can be changed into a prime (751312973) 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, 28896638 + ... + 28896663.

It is an arithmetic number, because the mean of its divisors is an integer number (202276557).

Almost surely, 2^751312913 is an apocalyptic number.

It is an amenable number.

751312913 is a deficient number, since it is larger than the sum of its proper divisors (57793315).

751312913 is a wasteful number, since it uses less digits than its factorization.

751312913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57793314.

The product of its digits is 5670, while the sum is 32.

The square root of 751312913 is about 27410.0877962841. The cubic root of 751312913 is about 909.0901476366.

The spelling of 751312913 in words is "seven hundred fifty-one million, three hundred twelve thousand, nine hundred thirteen".