31110200442 has 32 divisors (see below), whose sum is σ = 70438196160. Its totient is φ = 10174404240.

The previous prime is 31110200441. The next prime is 31110200477. The reversal of 31110200442 is 24400201113.

31110200442 is a `hidden beast` number, since 3 + 11 + 10 + 200 + 442 = 666.

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 (31110200441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5432184 + ... + 5437907.

It is an arithmetic number, because the mean of its divisors is an integer number (2201193630).

Almost surely, 2^31110200442 is an apocalyptic number.

31110200442 is an abundant number, since it is smaller than the sum of its proper divisors (39327995718).

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

31110200442 is a wasteful number, since it uses less digits than its factorization.

31110200442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10870155 (or 10870149 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 31110200442 its reverse (24400201113), we get a palindrome (55510401555).

The spelling of 31110200442 in words is "thirty-one billion, one hundred ten million, two hundred thousand, four hundred forty-two".