31540225105 has 16 divisors (see below), whose sum is σ = 39507761664. Its totient is φ = 24126625600.

The previous prime is 31540225099. The next prime is 31540225163. The reversal of 31540225105 is 50152204513.

It is not a de Polignac number, because 31540225105 - 2³ = 31540225097 is a prime.

It is a super-2 number, since 2×31540225105² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289755 + ... + 383455.

It is an arithmetic number, because the mean of its divisors is an integer number (2469235104).

Almost surely, 2^31540225105 is an apocalyptic number.

It is an amenable number.

31540225105 is a deficient number, since it is larger than the sum of its proper divisors (7967536559).

31540225105 is a wasteful number, since it uses less digits than its factorization.

31540225105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96656.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 31540225105 its reverse (50152204513), we get a palindrome (81692429618).

The spelling of 31540225105 in words is "thirty-one billion, five hundred forty million, two hundred twenty-five thousand, one hundred five".