346031381 has 2 divisors, whose sum is σ = 346031382. Its totient is φ = 346031380.

The previous prime is 346031359. The next prime is 346031407. The reversal of 346031381 is 183130643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201214225 + 144817156 = 14185^2 + 12034^2 .

It is a cyclic number.

It is not a de Polignac number, because 346031381 - 2⁶ = 346031317 is a prime.

It is a super-2 number, since 2×346031381² = 239475433273534322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346031681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173015690 + 173015691.

It is an arithmetic number, because the mean of its divisors is an integer number (173015691).

Almost surely, 2^346031381 is an apocalyptic number.

It is an amenable number.

346031381 is a deficient number, since it is larger than the sum of its proper divisors (1).

346031381 is an equidigital number, since it uses as much as digits as its factorization.

346031381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 346031381 is about 18601.9187451187. The cubic root of 346031381 is about 702.0561185701.

The spelling of 346031381 in words is "three hundred forty-six million, thirty-one thousand, three hundred eighty-one".