145144341204231 has 32 divisors (see below), whose sum is σ = 196133131634688. Its totient is φ = 95466992703840.

The previous prime is 145144341204223. The next prime is 145144341204259. The reversal of 145144341204231 is 132402143441541.

It is not a de Polignac number, because 145144341204231 - 2³ = 145144341204223 is a prime.

It is a super-2 number, since 2×145144341204231² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145144341204231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145144341704231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164075550 + ... + 164957796.

It is an arithmetic number, because the mean of its divisors is an integer number (6129160363584).

Almost surely, 2^{145144341204231} is an apocalyptic number.

145144341204231 is a deficient number, since it is larger than the sum of its proper divisors (50988790430457).

145144341204231 is a wasteful number, since it uses less digits than its factorization.

145144341204231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884451.

The product of its (nonzero) digits is 184320, while the sum is 39.

Adding to 145144341204231 its reverse (132402143441541), we get a palindrome (277546484645772).

The spelling of 145144341204231 in words is "one hundred forty-five trillion, one hundred forty-four billion, three hundred forty-one million, two hundred four thousand, two hundred thirty-one".