31032145143530 has 16 divisors (see below), whose sum is σ = 55858837648680. Its totient is φ = 12412641081792.

The previous prime is 31032145143529. The next prime is 31032145143533. The reversal of 31032145143530 is 3534154123013.

It can be written as a sum of positive squares in 4 ways, for example, as 26986684706641 + 4045460436889 = 5194871^2 + 2011333^2 .

It is a super-2 number, since 2×31032145143530² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31032145143533) 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, 26520629 + ... + 27666008.

Almost surely, 2^{31032145143530} is an apocalyptic number.

31032145143530 is a deficient number, since it is larger than the sum of its proper divisors (24826692505150).

31032145143530 is a wasteful number, since it uses less digits than its factorization.

31032145143530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54243913.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 31032145143530 its reverse (3534154123013), we get a palindrome (34566299266543).

The spelling of 31032145143530 in words is "thirty-one trillion, thirty-two billion, one hundred forty-five million, one hundred forty-three thousand, five hundred thirty".