31250104066 has 4 divisors (see below), whose sum is σ = 46875156102. Its totient is φ = 15625052032.

The previous prime is 31250104049. The next prime is 31250104111. The reversal of 31250104066 is 66040105213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17962700625 + 13287403441 = 134025^2 + 115271^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7812526015 + ... + 7812526018.

Almost surely, 2^31250104066 is an apocalyptic number.

31250104066 is a deficient number, since it is larger than the sum of its proper divisors (15625052036).

31250104066 is a wasteful number, since it uses less digits than its factorization.

31250104066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15625052035.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 31250104066 its reverse (66040105213), we get a palindrome (97290209279).

The spelling of 31250104066 in words is "thirty-one billion, two hundred fifty million, one hundred four thousand, sixty-six".