145531204131 has 8 divisors (see below), whose sum is σ = 195457968144. Its totient is φ = 96312621440.

The previous prime is 145531204129. The next prime is 145531204151. The reversal of 145531204131 is 131402135541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145531204131 - 2¹ = 145531204129 is a prime.

It is a super-2 number, since 2×145531204131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145531204151) 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, 177044850 + ... + 177045671.

It is an arithmetic number, because the mean of its divisors is an integer number (24432246018).

Almost surely, 2^145531204131 is an apocalyptic number.

145531204131 is a deficient number, since it is larger than the sum of its proper divisors (49926764013).

145531204131 is a wasteful number, since it uses less digits than its factorization.

145531204131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354090661.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 145531204131 its reverse (131402135541), we get a palindrome (276933339672).

The spelling of 145531204131 in words is "one hundred forty-five billion, five hundred thirty-one million, two hundred four thousand, one hundred thirty-one".