31100131013321 has 8 divisors (see below), whose sum is σ = 31138797864384. Its totient is φ = 31061464949520.

The previous prime is 31100131013291. The next prime is 31100131013381. The reversal of 31100131013321 is 12331013100113.

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 31100131013321 - 2¹⁴ = 31100130996937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31100131013293 and 31100131013302.

It is not an unprimeable number, because it can be changed into a prime (31100131013381) 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, 146909876 + ... + 147121418.

It is an arithmetic number, because the mean of its divisors is an integer number (3892349733048).

Almost surely, 2^{31100131013321} is an apocalyptic number.

It is an amenable number.

31100131013321 is a deficient number, since it is larger than the sum of its proper divisors (38666851063).

31100131013321 is a wasteful number, since it uses less digits than its factorization.

31100131013321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393631.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 31100131013321 its reverse (12331013100113), we get a palindrome (43431144113434).

The spelling of 31100131013321 in words is "thirty-one trillion, one hundred billion, one hundred thirty-one million, thirteen thousand, three hundred twenty-one".