354631243 has 2 divisors, whose sum is σ = 354631244. Its totient is φ = 354631242.

The previous prime is 354631229. The next prime is 354631261. The reversal of 354631243 is 342136453.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354631243 is a prime.

It is not a weakly prime, because it can be changed into another prime (354631283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177315621 + 177315622.

It is an arithmetic number, because the mean of its divisors is an integer number (177315622).

Almost surely, 2^354631243 is an apocalyptic number.

354631243 is a deficient number, since it is larger than the sum of its proper divisors (1).

354631243 is an equidigital number, since it uses as much as digits as its factorization.

354631243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 31.

The square root of 354631243 is about 18831.6553441273. The cubic root of 354631243 is about 707.8246204764.

Adding to 354631243 its reverse (342136453), we get a palindrome (696767696).

The spelling of 354631243 in words is "three hundred fifty-four million, six hundred thirty-one thousand, two hundred forty-three".