7312189247 has 4 divisors (see below), whose sum is σ = 7976933736. Its totient is φ = 6647444760.

The previous prime is 7312189217. The next prime is 7312189271. The reversal of 7312189247 is 7429812137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7429812137 = 11 ⋅675437467.

It is not a de Polignac number, because 7312189247 - 2²⁴ = 7295412031 is a prime.

It is a super-2 number, since 2×7312189247² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7312189198 and 7312189207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7312189217) 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, 332372228 + ... + 332372249.

It is an arithmetic number, because the mean of its divisors is an integer number (1994233434).

Almost surely, 2^7312189247 is an apocalyptic number.

7312189247 is a deficient number, since it is larger than the sum of its proper divisors (664744489).

7312189247 is a wasteful number, since it uses less digits than its factorization.

7312189247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664744488.

The product of its digits is 169344, while the sum is 44.

The square root of 7312189247 is about 85511.3398737267. The cubic root of 7312189247 is about 1940.9565240005.

The spelling of 7312189247 in words is "seven billion, three hundred twelve million, one hundred eighty-nine thousand, two hundred forty-seven".