31070212455109 has 4 divisors (see below), whose sum is σ = 31073821502220. Its totient is φ = 31066603408000.

The previous prime is 31070212455089. The next prime is 31070212455181. The reversal of 31070212455109 is 90155421207013.

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 15245354520900 + 15824857934209 = 3904530^2 + 3978047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31070212455109 is a prime.

It is a super-2 number, since 2×31070212455109² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31070212455509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1804510642 + ... + 1804527859.

It is an arithmetic number, because the mean of its divisors is an integer number (7768455375555).

Almost surely, 2^{31070212455109} is an apocalyptic number.

It is an amenable number.

31070212455109 is a deficient number, since it is larger than the sum of its proper divisors (3609047111).

31070212455109 is an equidigital number, since it uses as much as digits as its factorization.

31070212455109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609047110.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 31070212455109 in words is "thirty-one trillion, seventy billion, two hundred twelve million, four hundred fifty-five thousand, one hundred nine".