145031322 has 16 divisors (see below), whose sum is σ = 294979680. Its totient is φ = 47524272.

The previous prime is 145031311. The next prime is 145031323. The reversal of 145031322 is 223130541.

It is a super-2 number, since 2×145031322² = 42068168722135368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145031323) 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, 204493 + ... + 205200.

It is an arithmetic number, because the mean of its divisors is an integer number (18436230).

Almost surely, 2^145031322 is an apocalyptic number.

145031322 is an abundant number, since it is smaller than the sum of its proper divisors (149948358).

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

145031322 is a wasteful number, since it uses less digits than its factorization.

145031322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409757.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 145031322 is about 12042.8950838243. The cubic root of 145031322 is about 525.3966127739.

Adding to 145031322 its reverse (223130541), we get a palindrome (368161863).

The spelling of 145031322 in words is "one hundred forty-five million, thirty-one thousand, three hundred twenty-two".