7312378523 has 4 divisors (see below), whose sum is σ = 7630308048. Its totient is φ = 6994449000.

The previous prime is 7312378519. The next prime is 7312378543. The reversal of 7312378523 is 3258732137.

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 7312378523 - 2² = 7312378519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7312378543) 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, 158964728 + ... + 158964773.

It is an arithmetic number, because the mean of its divisors is an integer number (1907577012).

Almost surely, 2^7312378523 is an apocalyptic number.

7312378523 is a deficient number, since it is larger than the sum of its proper divisors (317929525).

7312378523 is a wasteful number, since it uses less digits than its factorization.

7312378523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317929524.

The product of its digits is 211680, while the sum is 41.

The square root of 7312378523 is about 85512.4465969721. The cubic root of 7312378523 is about 1940.9732710742.

The spelling of 7312378523 in words is "seven billion, three hundred twelve million, three hundred seventy-eight thousand, five hundred twenty-three".