31430441011 has 4 divisors (see below), whose sum is σ = 31432156912. Its totient is φ = 31428725112.

The previous prime is 31430440969. The next prime is 31430441033. The reversal of 31430441011 is 11014403413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31430441011 - 2⁹ = 31430440499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31430441311) 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, 830175 + ... + 867208.

It is an arithmetic number, because the mean of its divisors is an integer number (7858039228).

Almost surely, 2^31430441011 is an apocalyptic number.

31430441011 is a deficient number, since it is larger than the sum of its proper divisors (1715901).

31430441011 is a wasteful number, since it uses less digits than its factorization.

31430441011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715900.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31430441011 its reverse (11014403413), we get a palindrome (42444844424).

The spelling of 31430441011 in words is "thirty-one billion, four hundred thirty million, four hundred forty-one thousand, eleven".