31112032121111 has 24 divisors (see below), whose sum is σ = 32081079587760. Its totient is φ = 30150205420032.

The previous prime is 31112032121077. The next prime is 31112032121119. The reversal of 31112032121111 is 11112123021113.

It is not a de Polignac number, because 31112032121111 - 2⁴² = 26713985610007 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 (31112032121119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6587342996 + ... + 6587347718.

It is an arithmetic number, because the mean of its divisors is an integer number (1336711649490).

Almost surely, 2^{31112032121111} is an apocalyptic number.

31112032121111 is a deficient number, since it is larger than the sum of its proper divisors (969047466649).

31112032121111 is an equidigital number, since it uses as much as digits as its factorization.

31112032121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7263 (or 6956 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 31112032121111 its reverse (11112123021113), we get a palindrome (42224155142224).

The spelling of 31112032121111 in words is "thirty-one trillion, one hundred twelve billion, thirty-two million, one hundred twenty-one thousand, one hundred eleven".