31210103031242 has 16 divisors (see below), whose sum is σ = 47699030461032. Its totient is φ = 15310433261760.

The previous prime is 31210103031241. The next prime is 31210103031269. The reversal of 31210103031242 is 24213030101213.

It can be written as a sum of positive squares in 4 ways, for example, as 19089393077881 + 12120709953361 = 4369141^2 + 3481481^2 .

It is not an unprimeable number, because it can be changed into a prime (31210103031241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7353392 + ... + 10793172.

Almost surely, 2^{31210103031242} is an apocalyptic number.

31210103031242 is a deficient number, since it is larger than the sum of its proper divisors (16488927429790).

31210103031242 is a wasteful number, since it uses less digits than its factorization.

31210103031242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525433.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31210103031242 its reverse (24213030101213), we get a palindrome (55423133132455).

The spelling of 31210103031242 in words is "thirty-one trillion, two hundred ten billion, one hundred three million, thirty-one thousand, two hundred forty-two".