31100220123 has 8 divisors (see below), whose sum is σ = 47390811648. Its totient is φ = 17771554344.

The previous prime is 31100220113. The next prime is 31100220127. The reversal of 31100220123 is 32102200113.

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

It is not a de Polignac number, because 31100220123 - 2⁶ = 31100220059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31100220127) 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, 740481411 + ... + 740481452.

It is an arithmetic number, because the mean of its divisors is an integer number (5923851456).

Almost surely, 2^31100220123 is an apocalyptic number.

31100220123 is a deficient number, since it is larger than the sum of its proper divisors (16290591525).

31100220123 is a wasteful number, since it uses less digits than its factorization.

31100220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480962873.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31100220123 its reverse (32102200113), we get a palindrome (63202420236).

The spelling of 31100220123 in words is "thirty-one billion, one hundred million, two hundred twenty thousand, one hundred twenty-three".