145730131 has 2 divisors, whose sum is σ = 145730132. Its totient is φ = 145730130.

The previous prime is 145730129. The next prime is 145730197. The reversal of 145730131 is 131037541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145730131 - 2¹ = 145730129 is a prime.

It is a super-2 number, since 2×145730131² = 42474542162554322, which contains 22 as substring.

Together with 145730129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 145730096 and 145730105.

It is not a weakly prime, because it can be changed into another prime (145730731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72865065 + 72865066.

It is an arithmetic number, because the mean of its divisors is an integer number (72865066).

Almost surely, 2^145730131 is an apocalyptic number.

145730131 is a deficient number, since it is larger than the sum of its proper divisors (1).

145730131 is an equidigital number, since it uses as much as digits as its factorization.

145730131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 145730131 is about 12071.8735497022. The cubic root of 145730131 is about 526.2391061137.

Adding to 145730131 its reverse (131037541), we get a palindrome (276767672).

The spelling of 145730131 in words is "one hundred forty-five million, seven hundred thirty thousand, one hundred thirty-one".