145143235331 has 4 divisors (see below), whose sum is σ = 152782353000. Its totient is φ = 137504117664.

The previous prime is 145143235313. The next prime is 145143235339. The reversal of 145143235331 is 133532341541.

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 145143235331 - 2¹⁰ = 145143234307 is a prime.

It is a super-2 number, since 2×145143235331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145143235291 and 145143235300.

It is not an unprimeable number, because it can be changed into a prime (145143235339) 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, 3819558806 + ... + 3819558843.

It is an arithmetic number, because the mean of its divisors is an integer number (38195588250).

Almost surely, 2^145143235331 is an apocalyptic number.

145143235331 is a deficient number, since it is larger than the sum of its proper divisors (7639117669).

145143235331 is an equidigital number, since it uses as much as digits as its factorization.

145143235331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639117668.

The product of its digits is 64800, while the sum is 35.

Adding to 145143235331 its reverse (133532341541), we get a palindrome (278675576872).

The spelling of 145143235331 in words is "one hundred forty-five billion, one hundred forty-three million, two hundred thirty-five thousand, three hundred thirty-one".