145031403 has 32 divisors (see below), whose sum is σ = 224259840. Its totient is φ = 82396160.

The previous prime is 145031401. The next prime is 145031413. The reversal of 145031403 is 304130541.

It is not a de Polignac number, because 145031403 - 2¹ = 145031401 is a prime.

It is a super-2 number, since 2×145031403² = 42068215712296818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145031403.

It is not an unprimeable number, because it can be changed into a prime (145031401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234751 + ... + 235367.

It is an arithmetic number, because the mean of its divisors is an integer number (7008120).

Almost surely, 2^145031403 is an apocalyptic number.

145031403 is a deficient number, since it is larger than the sum of its proper divisors (79228437).

145031403 is a wasteful number, since it uses less digits than its factorization.

145031403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067.

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

The square root of 145031403 is about 12042.8984468026. The cubic root of 145031403 is about 525.3967105853.

Adding to 145031403 its reverse (304130541), we get a palindrome (449161944).

The spelling of 145031403 in words is "one hundred forty-five million, thirty-one thousand, four hundred three".