7223272981 has 4 divisors (see below), whose sum is σ = 7537328352. Its totient is φ = 6909217612.

The previous prime is 7223272963. The next prime is 7223273011. The reversal of 7223272981 is 1892723227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1892723227 = 53 ⋅35711759.

It is a cyclic number.

It is not a de Polignac number, because 7223272981 - 2¹⁹ = 7222748693 is a prime.

It is a super-2 number, since 2×7223272981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7223272961) 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, 157027651 + ... + 157027696.

It is an arithmetic number, because the mean of its divisors is an integer number (1884332088).

Almost surely, 2^7223272981 is an apocalyptic number.

It is an amenable number.

7223272981 is a deficient number, since it is larger than the sum of its proper divisors (314055371).

7223272981 is a wasteful number, since it uses less digits than its factorization.

7223272981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314055370.

The product of its digits is 169344, while the sum is 43.

The square root of 7223272981 is about 84989.8404575512. The cubic root of 7223272981 is about 1933.0570700741.

The spelling of 7223272981 in words is "seven billion, two hundred twenty-three million, two hundred seventy-two thousand, nine hundred eighty-one".