145423319 has 4 divisors (see below), whose sum is σ = 151746096. Its totient is φ = 139100544.

The previous prime is 145423309. The next prime is 145423339. The reversal of 145423319 is 913324541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145423319 - 2⁴ = 145423303 is a prime.

It is a super-2 number, since 2×145423319² = 42295883417951522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145423309) 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, 3161354 + ... + 3161399.

It is an arithmetic number, because the mean of its divisors is an integer number (37936524).

Almost surely, 2^145423319 is an apocalyptic number.

145423319 is a deficient number, since it is larger than the sum of its proper divisors (6322777).

145423319 is an equidigital number, since it uses as much as digits as its factorization.

145423319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6322776.

The product of its digits is 12960, while the sum is 32.

The square root of 145423319 is about 12059.1591332066. The cubic root of 145423319 is about 525.8695419260.

The spelling of 145423319 in words is "one hundred forty-five million, four hundred twenty-three thousand, three hundred nineteen".