145140331 has 16 divisors (see below), whose sum is σ = 172074240. Its totient is φ = 119780640.

The previous prime is 145140329. The next prime is 145140337. The reversal of 145140331 is 133041541.

145140331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145140331 - 2¹ = 145140329 is a prime.

It is a super-2 number, since 2×145140331² = 42131431365579122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145140337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94036 + ... + 95566.

It is an arithmetic number, because the mean of its divisors is an integer number (10754640).

Almost surely, 2^145140331 is an apocalyptic number.

145140331 is a deficient number, since it is larger than the sum of its proper divisors (26933909).

145140331 is a wasteful number, since it uses less digits than its factorization.

145140331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 145140331 is about 12047.4200972656. The cubic root of 145140331 is about 525.5282133489.

Adding to 145140331 its reverse (133041541), we get a palindrome (278181872).

The spelling of 145140331 in words is "one hundred forty-five million, one hundred forty thousand, three hundred thirty-one".