145340311 has 4 divisors (see below), whose sum is σ = 145459800. Its totient is φ = 145220824.

The previous prime is 145340297. The next prime is 145340323. The reversal of 145340311 is 113043541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145340311 is a prime.

It is a super-2 number, since 2×145340311² = 42247612003153442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145341311) 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, 57901 + ... + 60358.

It is an arithmetic number, because the mean of its divisors is an integer number (36364950).

Almost surely, 2^145340311 is an apocalyptic number.

145340311 is a deficient number, since it is larger than the sum of its proper divisors (119489).

145340311 is a wasteful number, since it uses less digits than its factorization.

145340311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119488.

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

The square root of 145340311 is about 12055.7169425962. The cubic root of 145340311 is about 525.7694669923.

Adding to 145340311 its reverse (113043541), we get a palindrome (258383852).

The spelling of 145340311 in words is "one hundred forty-five million, three hundred forty thousand, three hundred eleven".