20311610112 has 72 divisors (see below), whose sum is σ = 60065024880. Its totient is φ = 6770534400.

The previous prime is 20311610101. The next prime is 20311610113. The reversal of 20311610112 is 21101611302.

20311610112 is a `hidden beast` number, since 20 + 31 + 1 + 610 + 1 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20311610113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1462389 + ... + 1476212.

Almost surely, 2^20311610112 is an apocalyptic number.

It is an amenable number.

20311610112 is an abundant number, since it is smaller than the sum of its proper divisors (39753414768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311610112 is an equidigital number, since it uses as much as digits as its factorization.

20311610112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938626 (or 2938606 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 20311610112 in words is "twenty billion, three hundred eleven million, six hundred ten thousand, one hundred twelve".