31311120445 has 16 divisors (see below), whose sum is σ = 41482953792. Its totient is φ = 22497362560.

The previous prime is 31311120443. The next prime is 31311120473. The reversal of 31311120445 is 54402111313.

It is not a de Polignac number, because 31311120445 - 2¹ = 31311120443 is a prime.

It is a super-3 number, since 3×31311120445³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311120443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3424912 + ... + 3434041.

It is an arithmetic number, because the mean of its divisors is an integer number (2592684612).

Almost surely, 2^31311120445 is an apocalyptic number.

It is an amenable number.

31311120445 is a deficient number, since it is larger than the sum of its proper divisors (10171833347).

31311120445 is a wasteful number, since it uses less digits than its factorization.

31311120445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6859052.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 31311120445 its reverse (54402111313), we get a palindrome (85713231758).

The spelling of 31311120445 in words is "thirty-one billion, three hundred eleven million, one hundred twenty thousand, four hundred forty-five".