150991123 has 2 divisors, whose sum is σ = 150991124. Its totient is φ = 150991122.

The previous prime is 150991109. The next prime is 150991147. The reversal of 150991123 is 321199051.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 150991123 - 2¹⁷ = 150860051 is a prime.

It is a super-2 number, since 2×150991123² = 45596638449602258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (150991153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75495561 + 75495562.

It is an arithmetic number, because the mean of its divisors is an integer number (75495562).

Almost surely, 2^150991123 is an apocalyptic number.

150991123 is a deficient number, since it is larger than the sum of its proper divisors (1).

150991123 is an equidigital number, since it uses as much as digits as its factorization.

150991123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 150991123 is about 12287.8445221284. The cubic root of 150991123 is about 532.4969669278.

The spelling of 150991123 in words is "one hundred fifty million, nine hundred ninety-one thousand, one hundred twenty-three".