73214381 has 2 divisors, whose sum is σ = 73214382. Its totient is φ = 73214380.

The previous prime is 73214377. The next prime is 73214387. The reversal of 73214381 is 18341237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72675625 + 538756 = 8525^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 73214381 - 2² = 73214377 is a prime.

It is a super-2 number, since 2×73214381² = 10720691170426322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73214387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36607190 + 36607191.

It is an arithmetic number, because the mean of its divisors is an integer number (36607191).

Almost surely, 2^73214381 is an apocalyptic number.

It is an amenable number.

73214381 is a deficient number, since it is larger than the sum of its proper divisors (1).

73214381 is an equidigital number, since it uses as much as digits as its factorization.

73214381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 73214381 is about 8556.5402470859. The cubic root of 73214381 is about 418.3426389398.

The spelling of 73214381 in words is "seventy-three million, two hundred fourteen thousand, three hundred eighty-one".