31134320111 has 4 divisors (see below), whose sum is σ = 31137143424. Its totient is φ = 31131496800.

The previous prime is 31134320089. The next prime is 31134320171. The reversal of 31134320111 is 11102343113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11102343113 = 59 ⋅188175307.

It is a cyclic number.

It is not a de Polignac number, because 31134320111 - 2²⁶ = 31067211247 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 (31134320171) 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, 1395050 + ... + 1417191.

It is an arithmetic number, because the mean of its divisors is an integer number (7784285856).

Almost surely, 2^31134320111 is an apocalyptic number.

31134320111 is a deficient number, since it is larger than the sum of its proper divisors (2823313).

31134320111 is a wasteful number, since it uses less digits than its factorization.

31134320111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823312.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31134320111 its reverse (11102343113), we get a palindrome (42236663224).

The spelling of 31134320111 in words is "thirty-one billion, one hundred thirty-four million, three hundred twenty thousand, one hundred eleven".