31103253123 has 8 divisors (see below), whose sum is σ = 41495080128. Its totient is φ = 20723464104.

The previous prime is 31103253113. The next prime is 31103253127. The reversal of 31103253123 is 32135230113.

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

It is not a de Polignac number, because 31103253123 - 2⁸ = 31103252867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31103253093 and 31103253102.

It is not an unprimeable number, because it can be changed into a prime (31103253127) 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, 3003465 + ... + 3013802.

It is an arithmetic number, because the mean of its divisors is an integer number (5186885016).

Almost surely, 2^31103253123 is an apocalyptic number.

31103253123 is a deficient number, since it is larger than the sum of its proper divisors (10391827005).

31103253123 is a wasteful number, since it uses less digits than its factorization.

31103253123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6018993.

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 31103253123 its reverse (32135230113), we get a palindrome (63238483236).

The spelling of 31103253123 in words is "thirty-one billion, one hundred three million, two hundred fifty-three thousand, one hundred twenty-three".