274315381 has 2 divisors, whose sum is σ = 274315382. Its totient is φ = 274315380.

The previous prime is 274315351. The next prime is 274315463. The reversal of 274315381 is 183513472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271129156 + 3186225 = 16466^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 274315381 - 2²⁷ = 140097653 is a prime.

It is a super-2 number, since 2×274315381² = 150497856506350322, which contains 22 as substring.

It is equal to p_14933572 and since 274315381 and 14933572 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (274315351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137157690 + 137157691.

It is an arithmetic number, because the mean of its divisors is an integer number (137157691).

Almost surely, 2^274315381 is an apocalyptic number.

It is an amenable number.

274315381 is a deficient number, since it is larger than the sum of its proper divisors (1).

274315381 is an equidigital number, since it uses as much as digits as its factorization.

274315381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 274315381 is about 16562.4690490277. The cubic root of 274315381 is about 649.7556327966.

The spelling of 274315381 in words is "two hundred seventy-four million, three hundred fifteen thousand, three hundred eighty-one".