31103061625 has 16 divisors (see below), whose sum is σ = 39000619008. Its totient is φ = 24764502000.

The previous prime is 31103061589. The next prime is 31103061641. The reversal of 31103061625 is 52616030113.

It is not a de Polignac number, because 31103061625 - 2⁹ = 31103061113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31103061593 and 31103061602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563257 + ... + 616006.

It is an arithmetic number, because the mean of its divisors is an integer number (2437538688).

Almost surely, 2^31103061625 is an apocalyptic number.

It is an amenable number.

31103061625 is a deficient number, since it is larger than the sum of its proper divisors (7897557383).

31103061625 is a wasteful number, since it uses less digits than its factorization.

31103061625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179489 (or 1179479 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 31103061625 its reverse (52616030113), we get a palindrome (83719091738).

The spelling of 31103061625 in words is "thirty-one billion, one hundred three million, sixty-one thousand, six hundred twenty-five".