145417331 has 2 divisors, whose sum is σ = 145417332. Its totient is φ = 145417330.

The previous prime is 145417313. The next prime is 145417343. The reversal of 145417331 is 133714541.

145417331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (145417313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145417331 - 2⁶ = 145417267 is a prime.

It is a super-2 number, since 2×145417331² = 42292400310327122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 145417294 and 145417303.

It is not a weakly prime, because it can be changed into another prime (145417381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72708665 + 72708666.

It is an arithmetic number, because the mean of its divisors is an integer number (72708666).

Almost surely, 2^145417331 is an apocalyptic number.

145417331 is a deficient number, since it is larger than the sum of its proper divisors (1).

145417331 is an equidigital number, since it uses as much as digits as its factorization.

145417331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 145417331 is about 12058.9108546336. The cubic root of 145417331 is about 525.8623240326.

The spelling of 145417331 in words is "one hundred forty-five million, four hundred seventeen thousand, three hundred thirty-one".