145231513291 has 2 divisors, whose sum is σ = 145231513292. Its totient is φ = 145231513290.

The previous prime is 145231513211. The next prime is 145231513313. The reversal of 145231513291 is 192315132541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145231513291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145231513291.

It is not a weakly prime, because it can be changed into another prime (145231513211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72615756645 + 72615756646.

It is an arithmetic number, because the mean of its divisors is an integer number (72615756646).

Almost surely, 2^145231513291 is an apocalyptic number.

145231513291 is a deficient number, since it is larger than the sum of its proper divisors (1).

145231513291 is an equidigital number, since it uses as much as digits as its factorization.

145231513291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 37.

The spelling of 145231513291 in words is "one hundred forty-five billion, two hundred thirty-one million, five hundred thirteen thousand, two hundred ninety-one".