31120001233009 has 4 divisors (see below), whose sum is σ = 33513847481716. Its totient is φ = 28726154984304.

The previous prime is 31120001233007. The next prime is 31120001233019. The reversal of 31120001233009 is 90033210002113.

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 3387981378609 + 27732019854400 = 1840647^2 + 5266120^2 .

It is a cyclic number.

It is not a de Polignac number, because 31120001233009 - 2¹ = 31120001233007 is a prime.

It is a super-2 number, since 2×31120001233009² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31120001233007) 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, 1196923124334 + ... + 1196923124359.

It is an arithmetic number, because the mean of its divisors is an integer number (8378461870429).

Almost surely, 2^{31120001233009} is an apocalyptic number.

It is an amenable number.

31120001233009 is a deficient number, since it is larger than the sum of its proper divisors (2393846248707).

31120001233009 is a wasteful number, since it uses less digits than its factorization.

31120001233009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393846248706.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 31120001233009 in words is "thirty-one trillion, one hundred twenty billion, one million, two hundred thirty-three thousand, nine".