151309 has 4 divisors (see below), whose sum is σ = 153216. Its totient is φ = 149404.

The previous prime is 151303. The next prime is 151337. The reversal of 151309 is 903151.

151309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 151309 - 2⁹ = 150797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829 + ... + 994.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

2¹⁵¹³⁰⁹ is an apocalyptic number.

It is an amenable number.

151309 is a deficient number, since it is larger than the sum of its proper divisors (1907).

151309 is an equidigital number, since it uses as much as digits as its factorization.

151309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 151309 is about 388.9845755297. The cubic root of 151309 is about 53.2870388200.

The spelling of 151309 in words is "one hundred fifty-one thousand, three hundred nine".