145231031013 has 4 divisors (see below), whose sum is σ = 193641374688. Its totient is φ = 96820687340.

The previous prime is 145231030981. The next prime is 145231031017. The reversal of 145231031013 is 310130132541.

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 145231031013 - 2⁵ = 145231030981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145231031017) 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, 24205171833 + ... + 24205171838.

It is an arithmetic number, because the mean of its divisors is an integer number (48410343672).

Almost surely, 2^145231031013 is an apocalyptic number.

It is an amenable number.

145231031013 is a deficient number, since it is larger than the sum of its proper divisors (48410343675).

145231031013 is an equidigital number, since it uses as much as digits as its factorization.

145231031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48410343674.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 145231031013 its reverse (310130132541), we get a palindrome (455361163554).

The spelling of 145231031013 in words is "one hundred forty-five billion, two hundred thirty-one million, thirty-one thousand, thirteen".