354236243 has 2 divisors, whose sum is σ = 354236244. Its totient is φ = 354236242.

The previous prime is 354236221. The next prime is 354236249. The reversal of 354236243 is 342632453.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 354236243 - 2¹² = 354232147 is a prime.

It is a super-3 number, since 3×354236243³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (354236249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177118121 + 177118122.

It is an arithmetic number, because the mean of its divisors is an integer number (177118122).

Almost surely, 2^354236243 is an apocalyptic number.

354236243 is a deficient number, since it is larger than the sum of its proper divisors (1).

354236243 is an equidigital number, since it uses as much as digits as its factorization.

354236243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 32.

The square root of 354236243 is about 18821.1647620438. The cubic root of 354236243 is about 707.5617233584.

Adding to 354236243 its reverse (342632453), we get a palindrome (696868696).

The spelling of 354236243 in words is "three hundred fifty-four million, two hundred thirty-six thousand, two hundred forty-three".