31430630530561 has 4 divisors (see below), whose sum is σ = 31430836312624. Its totient is φ = 31430424748500.

The previous prime is 31430630530493. The next prime is 31430630530577. The reversal of 31430630530561 is 16503503603413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31430630530561 - 2¹⁹ = 31430630006273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31430630530591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102661755 + ... + 102967456.

It is an arithmetic number, because the mean of its divisors is an integer number (7857709078156).

Almost surely, 2^{31430630530561} is an apocalyptic number.

It is an amenable number.

31430630530561 is a deficient number, since it is larger than the sum of its proper divisors (205782063).

31430630530561 is a wasteful number, since it uses less digits than its factorization.

31430630530561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205782062.

The product of its (nonzero) digits is 291600, while the sum is 40.

The spelling of 31430630530561 in words is "thirty-one trillion, four hundred thirty billion, six hundred thirty million, five hundred thirty thousand, five hundred sixty-one".