31112113011 has 8 divisors (see below), whose sum is σ = 47408934144. Its totient is φ = 17778350280.

The previous prime is 31112112971. The next prime is 31112113013. The reversal of 31112113011 is 11031121113.

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

It is not a de Polignac number, because 31112113011 - 2²³ = 31103724403 is a prime.

It is a super-2 number, since 2×31112113011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31112113013) 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, 740764575 + ... + 740764616.

It is an arithmetic number, because the mean of its divisors is an integer number (5926116768).

Almost surely, 2^31112113011 is an apocalyptic number.

31112113011 is a deficient number, since it is larger than the sum of its proper divisors (16296821133).

31112113011 is a wasteful number, since it uses less digits than its factorization.

31112113011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481529201.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 31112113011 its reverse (11031121113), we get a palindrome (42143234124).

The spelling of 31112113011 in words is "thirty-one billion, one hundred twelve million, one hundred thirteen thousand, eleven".