31540225106 has 16 divisors (see below), whose sum is σ = 50955874200. Its totient is φ = 14555232768.

The previous prime is 31540225099. The next prime is 31540225163. The reversal of 31540225106 is 60152204513.

It can be written as a sum of positive squares in 4 ways, for example, as 19537050625 + 12003174481 = 139775^2 + 109559^2 .

It is a super-2 number, since 2×31540225106² (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 7 ways as a sum of consecutive naturals, for example, 153380 + ... + 294288.

Almost surely, 2^31540225106 is an apocalyptic number.

31540225106 is a deficient number, since it is larger than the sum of its proper divisors (19415649094).

31540225106 is a wasteful number, since it uses less digits than its factorization.

31540225106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149533.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 31540225106 its reverse (60152204513), we get a palindrome (91692429619).

The spelling of 31540225106 in words is "thirty-one billion, five hundred forty million, two hundred twenty-five thousand, one hundred six".