31112132101111 has 4 divisors (see below), whose sum is σ = 31870964591424. Its totient is φ = 30353299610800.

The previous prime is 31112132101013. The next prime is 31112132101129. The reversal of 31112132101111 is 11110123121113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31112132101111 - 2¹⁷ = 31112131970039 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 (31112132101411) 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, 379416245095 + ... + 379416245176.

It is an arithmetic number, because the mean of its divisors is an integer number (7967741147856).

Almost surely, 2^{31112132101111} is an apocalyptic number.

31112132101111 is a deficient number, since it is larger than the sum of its proper divisors (758832490313).

31112132101111 is an equidigital number, since it uses as much as digits as its factorization.

31112132101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758832490312.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 31112132101111 its reverse (11110123121113), we get a palindrome (42222255222224).

The spelling of 31112132101111 in words is "thirty-one trillion, one hundred twelve billion, one hundred thirty-two million, one hundred one thousand, one hundred eleven".