31311311130101 has 4 divisors (see below), whose sum is σ = 31324450583232. Its totient is φ = 31298171676972.

The previous prime is 31311311130059. The next prime is 31311311130149. The reversal of 31311311130101 is 10103111311313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31311311130101 - 2¹⁸ = 31311310867957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311311130161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6569722991 + ... + 6569727756.

It is an arithmetic number, because the mean of its divisors is an integer number (7831112645808).

Almost surely, 2^{31311311130101} is an apocalyptic number.

It is an amenable number.

31311311130101 is a deficient number, since it is larger than the sum of its proper divisors (13139453131).

31311311130101 is a wasteful number, since it uses less digits than its factorization.

31311311130101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13139453130.

The product of its (nonzero) digits is 81, while the sum is 20.

Adding to 31311311130101 its reverse (10103111311313), we get a palindrome (41414422441414).

The spelling of 31311311130101 in words is "thirty-one trillion, three hundred eleven billion, three hundred eleven million, one hundred thirty thousand, one hundred one".