31554243240342 has 64 divisors (see below), whose sum is σ = 63778911356160. Its totient is φ = 10406997072000.

The previous prime is 31554243240337. The next prime is 31554243240367. The reversal of 31554243240342 is 24304234245513.

It is a junction number, because it is equal to n+sod(n) for n = 31554243240294 and 31554243240303.

It is a congruent number.

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, 360811273 + ... + 360898715.

It is an arithmetic number, because the mean of its divisors is an integer number (996545489940).

Almost surely, 2^{31554243240342} is an apocalyptic number.

31554243240342 is an abundant number, since it is smaller than the sum of its proper divisors (32224668115818).

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

31554243240342 is a wasteful number, since it uses less digits than its factorization.

31554243240342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89309.

The product of its (nonzero) digits is 1382400, while the sum is 42.

Adding to 31554243240342 its reverse (24304234245513), we get a palindrome (55858477485855).

The spelling of 31554243240342 in words is "thirty-one trillion, five hundred fifty-four billion, two hundred forty-three million, two hundred forty thousand, three hundred forty-two".