31120356011 has 8 divisors (see below), whose sum is σ = 33351075744. Its totient is φ = 28962774720.

The previous prime is 31120355891. The next prime is 31120356107. The reversal of 31120356011 is 11065302113.

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 31120356011 - 2³⁰ = 30046614187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31120356811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18283730 + ... + 18285431.

It is an arithmetic number, because the mean of its divisors is an integer number (4168884468).

Almost surely, 2^31120356011 is an apocalyptic number.

31120356011 is a deficient number, since it is larger than the sum of its proper divisors (2230719733).

31120356011 is a wasteful number, since it uses less digits than its factorization.

31120356011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36569221.

The product of its (nonzero) digits is 540, while the sum is 23.

Adding to 31120356011 its reverse (11065302113), we get a palindrome (42185658124).

The spelling of 31120356011 in words is "thirty-one billion, one hundred twenty million, three hundred fifty-six thousand, eleven".