31354435540042 has 16 divisors (see below), whose sum is σ = 47509552853064. Its totient is φ = 15517997920000.

The previous prime is 31354435539997. The next prime is 31354435540081. The reversal of 31354435540042 is 24004553445313.

It can be written as a sum of positive squares in 4 ways, for example, as 28201399629001 + 3153035911041 = 5310499^2 + 1775679^2 .

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, 19213459 + ... + 20781382.

Almost surely, 2^{31354435540042} is an apocalyptic number.

31354435540042 is a deficient number, since it is larger than the sum of its proper divisors (16155117313022).

31354435540042 is a wasteful number, since it uses less digits than its factorization.

31354435540042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39998825.

The product of its (nonzero) digits is 1728000, while the sum is 43.

Adding to 31354435540042 its reverse (24004553445313), we get a palindrome (55358988985355).

The spelling of 31354435540042 in words is "thirty-one trillion, three hundred fifty-four billion, four hundred thirty-five million, five hundred forty thousand, forty-two".