7420773231 has 8 divisors (see below), whose sum is σ = 10993738160. Its totient is φ = 4947182136.

The previous prime is 7420773223. The next prime is 7420773233. The reversal of 7420773231 is 1323770247.

It is a happy number.

It is not a de Polignac number, because 7420773231 - 2³ = 7420773223 is a prime.

It is a super-2 number, since 2×7420773231² (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 (7420773233) 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, 137421700 + ... + 137421753.

It is an arithmetic number, because the mean of its divisors is an integer number (1374217270).

Almost surely, 2^7420773231 is an apocalyptic number.

7420773231 is a deficient number, since it is larger than the sum of its proper divisors (3572964929).

7420773231 is a wasteful number, since it uses less digits than its factorization.

7420773231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274843462 (or 274843456 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The square root of 7420773231 is about 86143.9100052929. The cubic root of 7420773231 is about 1950.5169114843.

The spelling of 7420773231 in words is "seven billion, four hundred twenty million, seven hundred seventy-three thousand, two hundred thirty-one".