151023217 has 2 divisors, whose sum is σ = 151023218. Its totient is φ = 151023216.

The previous prime is 151023211. The next prime is 151023239. The reversal of 151023217 is 712320151.

It is a happy number.

It is an a-pointer prime, because the next prime (151023239) can be obtained adding 151023217 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138321121 + 12702096 = 11761^2 + 3564^2 .

It is an emirp because it is prime and its reverse (712320151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151023217 - 2¹⁵ = 150990449 is a prime.

It is a super-3 number, since 3×151023217³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (151023211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75511608 + 75511609.

It is an arithmetic number, because the mean of its divisors is an integer number (75511609).

Almost surely, 2^151023217 is an apocalyptic number.

It is an amenable number.

151023217 is a deficient number, since it is larger than the sum of its proper divisors (1).

151023217 is an equidigital number, since it uses as much as digits as its factorization.

151023217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 151023217 is about 12289.1503774671. The cubic root of 151023217 is about 532.5346926489.

Adding to 151023217 its reverse (712320151), we get a palindrome (863343368).

The spelling of 151023217 in words is "one hundred fifty-one million, twenty-three thousand, two hundred seventeen".