31103320113242 has 8 divisors (see below), whose sum is σ = 50243824798356. Its totient is φ = 14355378513792.

The previous prime is 31103320113167. The next prime is 31103320113253. The reversal of 31103320113242 is 24231102330113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30010335592561 + 1092984520681 = 5478169^2 + 1045459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 1196281542817 = 31103320113242 / (3 + 1 + 1 + 0 + 3 + 3 + 2 + 0 + 1 + 1 + 3 + 2 + 4 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598140771383 + ... + 598140771434.

Almost surely, 2^{31103320113242} is an apocalyptic number.

31103320113242 is a deficient number, since it is larger than the sum of its proper divisors (19140504685114).

31103320113242 is a wasteful number, since it uses less digits than its factorization.

31103320113242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196281542832.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31103320113242 its reverse (24231102330113), we get a palindrome (55334422443355).

The spelling of 31103320113242 in words is "thirty-one trillion, one hundred three billion, three hundred twenty million, one hundred thirteen thousand, two hundred forty-two".