31050784842 has 64 divisors (see below), whose sum is σ = 77546861568. Its totient is φ = 8052480000.

The previous prime is 31050784777. The next prime is 31050784861. The reversal of 31050784842 is 24848705013.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 31050784794 and 31050784803.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243717 + ... + 348567.

It is an arithmetic number, because the mean of its divisors is an integer number (1211669712).

Almost surely, 2^31050784842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31050784842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38773430784).

31050784842 is an abundant number, since it is smaller than the sum of its proper divisors (46496076726).

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

31050784842 is a wasteful number, since it uses less digits than its factorization.

31050784842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105515.

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 31050784842 in words is "thirty-one billion, fifty million, seven hundred eighty-four thousand, eight hundred forty-two".