145018631 has 2 divisors, whose sum is σ = 145018632. Its totient is φ = 145018630.

The previous prime is 145018613. The next prime is 145018649. The reversal of 145018631 is 136810541.

Together with previous prime (145018613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (145018613) and next prime (145018649).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145018631 is a prime.

It is a super-2 number, since 2×145018631² = 42060806674228322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145018594 and 145018603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145018691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72509315 + 72509316.

It is an arithmetic number, because the mean of its divisors is an integer number (72509316).

Almost surely, 2^145018631 is an apocalyptic number.

145018631 is a deficient number, since it is larger than the sum of its proper divisors (1).

145018631 is an equidigital number, since it uses as much as digits as its factorization.

145018631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 145018631 is about 12042.3681641112. The cubic root of 145018631 is about 525.3812873421.

It can be divided in two parts, 14501 and 8631, that added together give a palindrome (23132).

The spelling of 145018631 in words is "one hundred forty-five million, eighteen thousand, six hundred thirty-one".