145331004 has 48 divisors (see below), whose sum is σ = 417363968. Its totient is φ = 38328768.

The previous prime is 145330993. The next prime is 145331009. The reversal of 145331004 is 400133541.

It is a super-2 number, since 2×145331004² = 42242201447296032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145331009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65452 + ... + 67635.

Almost surely, 2^145331004 is an apocalyptic number.

145331004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

145331004 is an abundant number, since it is smaller than the sum of its proper divisors (272032964).

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

145331004 is a wasteful number, since it uses less digits than its factorization.

145331004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133114 (or 133112 counting only the distinct ones).

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

The square root of 145331004 is about 12055.3309369756. The cubic root of 145331004 is about 525.7582440429.

Adding to 145331004 its reverse (400133541), we get a palindrome (545464545).

The spelling of 145331004 in words is "one hundred forty-five million, three hundred thirty-one thousand, four".