152319391 has 24 divisors (see below), whose sum is σ = 181880160. Its totient is φ = 127153152.

The previous prime is 152319383. The next prime is 152319421. The reversal of 152319391 is 193913251.

152319391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 152319391 - 2³ = 152319383 is a prime.

It is a super-2 number, since 2×152319391² = 46402393749221762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152319301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346750 + ... + 347188.

It is an arithmetic number, because the mean of its divisors is an integer number (7578340).

Almost surely, 2^152319391 is an apocalyptic number.

152319391 is a deficient number, since it is larger than the sum of its proper divisors (29560769).

152319391 is an equidigital number, since it uses as much as digits as its factorization.

152319391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 616 counting only the distinct ones).

The product of its digits is 7290, while the sum is 34.

The square root of 152319391 is about 12341.7742241543. The cubic root of 152319391 is about 534.0538680012.

The spelling of 152319391 in words is "one hundred fifty-two million, three hundred nineteen thousand, three hundred ninety-one".