31722066125 has 16 divisors (see below), whose sum is σ = 39594996480. Its totient is φ = 25373898000.

The previous prime is 31722066107. The next prime is 31722066127. The reversal of 31722066125 is 52166022713.

It is a de Polignac number, because none of the positive numbers 2^k-31722066125 is a prime.

It is a super-3 number, since 3×31722066125³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31722066127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1090520 + ... + 1119230.

It is an arithmetic number, because the mean of its divisors is an integer number (2474687280).

Almost surely, 2^31722066125 is an apocalyptic number.

It is an amenable number.

31722066125 is a deficient number, since it is larger than the sum of its proper divisors (7872930355).

31722066125 is an equidigital number, since it uses as much as digits as its factorization.

31722066125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37565 (or 37555 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 31722066125 its reverse (52166022713), we get a palindrome (83888088838).

The spelling of 31722066125 in words is "thirty-one billion, seven hundred twenty-two million, sixty-six thousand, one hundred twenty-five".