20311211110 has 16 divisors (see below), whose sum is σ = 37820876400. Its totient is φ = 7844329696.

The previous prime is 20311211083. The next prime is 20311211131. The reversal of 20311211110 is 1111211302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35019040 + ... + 35019619.

It is an arithmetic number, because the mean of its divisors is an integer number (2363804775).

Almost surely, 2^20311211110 is an apocalyptic number.

20311211110 is a deficient number, since it is larger than the sum of its proper divisors (17509665290).

20311211110 is a wasteful number, since it uses less digits than its factorization.

20311211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70038695.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 20311211110 its reverse (1111211302), we get a palindrome (21422422412).

The spelling of 20311211110 in words is "twenty billion, three hundred eleven million, two hundred eleven thousand, one hundred ten".