247123273 has 2 divisors, whose sum is σ = 247123274. Its totient is φ = 247123272.

The previous prime is 247123243. The next prime is 247123343. The reversal of 247123273 is 372321742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145274809 + 101848464 = 12053^2 + 10092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247123273 is a prime.

It is a super-2 number, since 2×247123273² = 122139824116465058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247123223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123561636 + 123561637.

It is an arithmetic number, because the mean of its divisors is an integer number (123561637).

Almost surely, 2^247123273 is an apocalyptic number.

It is an amenable number.

247123273 is a deficient number, since it is larger than the sum of its proper divisors (1).

247123273 is an equidigital number, since it uses as much as digits as its factorization.

247123273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 31.

The square root of 247123273 is about 15720.1549928746. The cubic root of 247123273 is about 627.5348979285.

The spelling of 247123273 in words is "two hundred forty-seven million, one hundred twenty-three thousand, two hundred seventy-three".