145802231 has 2 divisors, whose sum is σ = 145802232. Its totient is φ = 145802230.

The previous prime is 145802213. The next prime is 145802249. The reversal of 145802231 is 132208541.

Together with previous prime (145802213) 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 (145802213) and next prime (145802249).

It is a cyclic number.

It is not a de Polignac number, because 145802231 - 2¹⁴ = 145785847 is a prime.

It is a super-2 number, since 2×145802231² = 42516581129154722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145802231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145802281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72901115 + 72901116.

It is an arithmetic number, because the mean of its divisors is an integer number (72901116).

Almost surely, 2^145802231 is an apocalyptic number.

145802231 is a deficient number, since it is larger than the sum of its proper divisors (1).

145802231 is an equidigital number, since it uses as much as digits as its factorization.

145802231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 145802231 is about 12074.8594608799. The cubic root of 145802231 is about 526.3258774258.

The spelling of 145802231 in words is "one hundred forty-five million, eight hundred two thousand, two hundred thirty-one".