145232013 has 8 divisors (see below), whose sum is σ = 193896288. Its totient is φ = 96694544.

The previous prime is 145231997. The next prime is 145232039. The reversal of 145232013 is 310232541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145232013 - 2⁴ = 145231997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145232053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28995 + ... + 33632.

It is an arithmetic number, because the mean of its divisors is an integer number (24237036).

Almost surely, 2^145232013 is an apocalyptic number.

It is an amenable number.

145232013 is a deficient number, since it is larger than the sum of its proper divisors (48664275).

145232013 is an equidigital number, since it uses as much as digits as its factorization.

145232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63403.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 145232013 is about 12051.2245435889. The cubic root of 145232013 is about 525.6388449834.

Adding to 145232013 its reverse (310232541), we get a palindrome (455464554).

The spelling of 145232013 in words is "one hundred forty-five million, two hundred thirty-two thousand, thirteen".