145461313 has 4 divisors (see below), whose sum is σ = 145485508. Its totient is φ = 145437120.

The previous prime is 145461301. The next prime is 145461353. The reversal of 145461313 is 313164541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 313164541 = 1297 ⋅241453.

It can be written as a sum of positive squares in 2 ways, for example, as 37051569 + 108409744 = 6087^2 + 10412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145461313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145461353) 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, 4645 + ... + 17677.

It is an arithmetic number, because the mean of its divisors is an integer number (36371377).

Almost surely, 2^145461313 is an apocalyptic number.

It is an amenable number.

145461313 is a deficient number, since it is larger than the sum of its proper divisors (24195).

145461313 is a wasteful number, since it uses less digits than its factorization.

145461313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24194.

The product of its digits is 4320, while the sum is 28.

The square root of 145461313 is about 12060.7343474599. The cubic root of 145461313 is about 525.9153350119.

The spelling of 145461313 in words is "one hundred forty-five million, four hundred sixty-one thousand, three hundred thirteen".