31354135633242 has 12 divisors (see below), whose sum is σ = 67933960538730. Its totient is φ = 10451378544408.

The previous prime is 31354135633231. The next prime is 31354135633243. The reversal of 31354135633242 is 24233653145313.

31354135633242 is a `hidden beast` number, since 3 + 1 + 3 + 5 + 4 + 1 + 3 + 5 + 633 + 2 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27931742932401 + 3422392700841 = 5285049^2 + 1849971^2 .

It is not an unprimeable number, because it can be changed into a prime (31354135633243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 870948212017 + ... + 870948212052.

Almost surely, 2^{31354135633242} is an apocalyptic number.

31354135633242 is an abundant number, since it is smaller than the sum of its proper divisors (36579824905488).

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

31354135633242 is a wasteful number, since it uses less digits than its factorization.

31354135633242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741896424077 (or 1741896424074 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 45.

Adding to 31354135633242 its reverse (24233653145313), we get a palindrome (55587788778555).

The spelling of 31354135633242 in words is "thirty-one trillion, three hundred fifty-four billion, one hundred thirty-five million, six hundred thirty-three thousand, two hundred forty-two".