150531613 has 2 divisors, whose sum is σ = 150531614. Its totient is φ = 150531612.

The previous prime is 150531587. The next prime is 150531631. The reversal of 150531613 is 316135051.

Together with next prime (150531631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81757764 + 68773849 = 9042^2 + 8293^2 .

It is a cyclic number.

It is not a de Polignac number, because 150531613 - 2⁵ = 150531581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150531653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75265806 + 75265807.

It is an arithmetic number, because the mean of its divisors is an integer number (75265807).

Almost surely, 2^150531613 is an apocalyptic number.

It is an amenable number.

150531613 is a deficient number, since it is larger than the sum of its proper divisors (1).

150531613 is an equidigital number, since it uses as much as digits as its factorization.

150531613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 150531613 is about 12269.1325284227. The cubic root of 150531613 is about 531.9562368602.

Adding to 150531613 its reverse (316135051), we get a palindrome (466666664).

The spelling of 150531613 in words is "one hundred fifty million, five hundred thirty-one thousand, six hundred thirteen".