31403332020042 has 24 divisors (see below), whose sum is σ = 68040926165316. Its totient is φ = 10467719885376.

The previous prime is 31403332020041. The next prime is 31403332020059. The reversal of 31403332020042 is 24002023330413.

31403332020042 is a `hidden beast` number, since 3 + 1 + 403 + 33 + 20 + 200 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30956104120041 + 447227900001 = 5563821^2 + 668751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31403332019988 and 31403332020015.

It is not an unprimeable number, because it can be changed into a prime (31403332020041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1350643 + ... + 8039334.

Almost surely, 2^{31403332020042} is an apocalyptic number.

31403332020042 is an abundant number, since it is smaller than the sum of its proper divisors (36637594145274).

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

31403332020042 is a wasteful number, since it uses less digits than its factorization.

31403332020042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9575782 (or 9575779 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 31403332020042 its reverse (24002023330413), we get a palindrome (55405355350455).

The spelling of 31403332020042 in words is "thirty-one trillion, four hundred three billion, three hundred thirty-two million, twenty thousand, forty-two".