31111313093 has 6 divisors (see below), whose sum is σ = 36190711206. Its totient is φ = 26666839752.

The previous prime is 31111313081. The next prime is 31111313111. The reversal of 31111313093 is 39031311113.

It can be written as a sum of positive squares in only one way, i.e., 29727621889 + 1383691204 = 172417^2 + 37198^2 .

It is not a de Polignac number, because 31111313093 - 2²⁴ = 31094535877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31111313053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317462330 + ... + 317462427.

It is an arithmetic number, because the mean of its divisors is an integer number (6031785201).

Almost surely, 2^31111313093 is an apocalyptic number.

It is an amenable number.

31111313093 is a deficient number, since it is larger than the sum of its proper divisors (5079398113).

31111313093 is an equidigital number, since it uses as much as digits as its factorization.

31111313093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634924771 (or 634924764 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 26.

The spelling of 31111313093 in words is "thirty-one billion, one hundred eleven million, three hundred thirteen thousand, ninety-three".