31103253125 has 48 divisors (see below), whose sum is σ = 47044488960. Its totient is φ = 20073120000.

The previous prime is 31103253113. The next prime is 31103253127. The reversal of 31103253125 is 52135230113.

It is not a de Polignac number, because 31103253125 - 2⁴ = 31103253109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31103253094 and 31103253103.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 330056 + ... + 413694.

It is an arithmetic number, because the mean of its divisors is an integer number (980093520).

Almost surely, 2^31103253125 is an apocalyptic number.

31103253125 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31103253125 is a deficient number, since it is larger than the sum of its proper divisors (15941235835).

31103253125 is an frugal number, since it uses more digits than its factorization.

31103253125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83688 (or 83668 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 31103253125 its reverse (52135230113), we get a palindrome (83238483238).

The spelling of 31103253125 in words is "thirty-one billion, one hundred three million, two hundred fifty-three thousand, one hundred twenty-five".