31120103111 has 8 divisors (see below), whose sum is σ = 31152844800. Its totient is φ = 31087382040.

The previous prime is 31120103101. The next prime is 31120103137. The reversal of 31120103111 is 11130102113.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31120103111 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 (31120103101) 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, 6173330 + ... + 6178368.

It is an arithmetic number, because the mean of its divisors is an integer number (3894105600).

Almost surely, 2^31120103111 is an apocalyptic number.

31120103111 is a deficient number, since it is larger than the sum of its proper divisors (32741689).

31120103111 is a wasteful number, since it uses less digits than its factorization.

31120103111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10309.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 31120103111 its reverse (11130102113), we get a palindrome (42250205224).

The spelling of 31120103111 in words is "thirty-one billion, one hundred twenty million, one hundred three thousand, one hundred eleven".