31103211332123 has 16 divisors (see below), whose sum is σ = 35614955370240. Its totient is φ = 26608623669600.

The previous prime is 31103211332119. The next prime is 31103211332131. The reversal of 31103211332123 is 32123311230113.

It is not a de Polignac number, because 31103211332123 - 2² = 31103211332119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31103211332092 and 31103211332101.

It is not an unprimeable number, because it can be changed into a prime (31103211332113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5513228 + ... + 9622998.

It is an arithmetic number, because the mean of its divisors is an integer number (2225934710640).

Almost surely, 2^{31103211332123} is an apocalyptic number.

31103211332123 is a deficient number, since it is larger than the sum of its proper divisors (4511744038117).

31103211332123 is a wasteful number, since it uses less digits than its factorization.

31103211332123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111858.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31103211332123 its reverse (32123311230113), we get a palindrome (63226522562236).

It can be divided in two parts, 3110321 and 1332123, that added together give a palindrome (4442444).

The spelling of 31103211332123 in words is "thirty-one trillion, one hundred three billion, two hundred eleven million, three hundred thirty-two thousand, one hundred twenty-three".