145331230 has 16 divisors (see below), whose sum is σ = 285377904. Its totient is φ = 52847680.

The previous prime is 145331213. The next prime is 145331239. The reversal of 145331230 is 32133541.

It is a super-2 number, since 2×145331230² = 42242332826625800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145331239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660487 + ... + 660706.

It is an arithmetic number, because the mean of its divisors is an integer number (17836119).

Almost surely, 2^145331230 is an apocalyptic number.

145331230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145331230 is a deficient number, since it is larger than the sum of its proper divisors (140046674).

145331230 is a wasteful number, since it uses less digits than its factorization.

145331230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321211.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 145331230 is about 12055.3403104184. The cubic root of 145331230 is about 525.7585165732.

Adding to 145331230 its reverse (32133541), we get a palindrome (177464771).

The spelling of 145331230 in words is "one hundred forty-five million, three hundred thirty-one thousand, two hundred thirty".