146781233 has 2 divisors, whose sum is σ = 146781234. Its totient is φ = 146781232.

The previous prime is 146781199. The next prime is 146781259. The reversal of 146781233 is 332187641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124389409 + 22391824 = 11153^2 + 4732^2 .

It is a cyclic number.

It is not a de Polignac number, because 146781233 - 2⁶ = 146781169 is a prime.

It is a super-2 number, since 2×146781233² = 43089460722000578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 146781193 and 146781202.

It is not a weakly prime, because it can be changed into another prime (146781263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73390616 + 73390617.

It is an arithmetic number, because the mean of its divisors is an integer number (73390617).

Almost surely, 2^146781233 is an apocalyptic number.

It is an amenable number.

146781233 is a deficient number, since it is larger than the sum of its proper divisors (1).

146781233 is an equidigital number, since it uses as much as digits as its factorization.

146781233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 146781233 is about 12115.3304948730. The cubic root of 146781233 is about 527.5012711574.

The spelling of 146781233 in words is "one hundred forty-six million, seven hundred eighty-one thousand, two hundred thirty-three".