31150421201245 has 8 divisors (see below), whose sum is σ = 37381093779384. Its totient is φ = 24919944735744.

The previous prime is 31150421201227. The next prime is 31150421201261. The reversal of 31150421201245 is 54210212405113.

It can be written as a sum of positive squares in 4 ways, for example, as 8181991134724 + 22968430066521 = 2860418^2 + 4792539^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31150421201245 - 2⁵ = 31150421201213 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 48678484 + ... + 49314253.

It is an arithmetic number, because the mean of its divisors is an integer number (4672636722423).

Almost surely, 2^{31150421201245} is an apocalyptic number.

It is an amenable number.

31150421201245 is a deficient number, since it is larger than the sum of its proper divisors (6230672578139).

31150421201245 is an equidigital number, since it uses as much as digits as its factorization.

31150421201245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98056319.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 31150421201245 its reverse (54210212405113), we get a palindrome (85360633606358).

The spelling of 31150421201245 in words is "thirty-one trillion, one hundred fifty billion, four hundred twenty-one million, two hundred one thousand, two hundred forty-five".