72316427 has 2 divisors, whose sum is σ = 72316428. Its totient is φ = 72316426.

The previous prime is 72316423. The next prime is 72316429. The reversal of 72316427 is 72461327.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72316427 - 2² = 72316423 is a prime.

It is a super-2 number, since 2×72316427² = 10459331228092658, which contains 22 as substring.

Together with 72316429, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 72316393 and 72316402.

It is not a weakly prime, because it can be changed into another prime (72316421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36158213 + 36158214.

It is an arithmetic number, because the mean of its divisors is an integer number (36158214).

Almost surely, 2^72316427 is an apocalyptic number.

72316427 is a deficient number, since it is larger than the sum of its proper divisors (1).

72316427 is an equidigital number, since it uses as much as digits as its factorization.

72316427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 32.

The square root of 72316427 is about 8503.9065728640. The cubic root of 72316427 is about 416.6253135137.

The spelling of 72316427 in words is "seventy-two million, three hundred sixteen thousand, four hundred twenty-seven".