31001066113 has 4 divisors (see below), whose sum is σ = 31016438020. Its totient is φ = 30985694208.

The previous prime is 31001066081. The next prime is 31001066123. The reversal of 31001066113 is 31166010013.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22121207824 + 8879858289 = 148732^2 + 94233^2 .

It is a cyclic number.

It is not a de Polignac number, because 31001066113 - 2⁵ = 31001066081 is a prime.

It is a super-2 number, since 2×31001066113² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31001066123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7682928 + ... + 7686961.

It is an arithmetic number, because the mean of its divisors is an integer number (7754109505).

Almost surely, 2^31001066113 is an apocalyptic number.

It is an amenable number.

31001066113 is a deficient number, since it is larger than the sum of its proper divisors (15371907).

31001066113 is a wasteful number, since it uses less digits than its factorization.

31001066113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15371906.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31001066113 its reverse (31166010013), we get a palindrome (62167076126).

The spelling of 31001066113 in words is "thirty-one billion, one million, sixty-six thousand, one hundred thirteen".