145403131304 has 8 divisors (see below), whose sum is σ = 272630871210. Its totient is φ = 72701565648.

The previous prime is 145403131303. The next prime is 145403131319. The reversal of 145403131304 is 403131304541.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 140347636900 + 5055494404 = 374630^2 + 71102^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×145403131304² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145403131303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9087695699 + ... + 9087695714.

Almost surely, 2^145403131304 is an apocalyptic number.

It is an amenable number.

145403131304 is a deficient number, since it is larger than the sum of its proper divisors (127227739906).

145403131304 is a wasteful number, since it uses less digits than its factorization.

145403131304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18175391419 (or 18175391415 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 145403131304 its reverse (403131304541), we get a palindrome (548534435845).

The spelling of 145403131304 in words is "one hundred forty-five billion, four hundred three million, one hundred thirty-one thousand, three hundred four".