145231170 has 96 divisors (see below), whose sum is σ = 423335808. Its totient is φ = 31229952.

The previous prime is 145231169. The next prime is 145231189. The reversal of 145231170 is 71132541.

It is a self number, because there is not a number n which added to its sum of digits gives 145231170.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59494 + ... + 61886.

It is an arithmetic number, because the mean of its divisors is an integer number (4409748).

Almost surely, 2^145231170 is an apocalyptic number.

145231170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145231170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211667904).

145231170 is an abundant number, since it is smaller than the sum of its proper divisors (278104638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145231170 is a wasteful number, since it uses less digits than its factorization.

145231170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444 (or 2427 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 145231170 is about 12051.1895678394. The cubic root of 145231170 is about 525.6378279570.

The spelling of 145231170 in words is "one hundred forty-five million, two hundred thirty-one thousand, one hundred seventy".