31431066266045 has 4 divisors (see below), whose sum is σ = 37717279519260. Its totient is φ = 25144853012832.

The previous prime is 31431066266027. The next prime is 31431066266101. The reversal of 31431066266045 is 54066266013413.

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 4118537418724 + 27312528847321 = 2029418^2 + 5226139^2 .

It is a cyclic number.

It is not a de Polignac number, because 31431066266045 - 2¹⁶ = 31431066200509 is a prime.

It is a super-4 number, since 4×31431066266045⁴ (a number of 55 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

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, 3143106626600 + ... + 3143106626609.

It is an arithmetic number, because the mean of its divisors is an integer number (9429319879815).

Almost surely, 2^{31431066266045} is an apocalyptic number.

It is an amenable number.

31431066266045 is a deficient number, since it is larger than the sum of its proper divisors (6286213253215).

31431066266045 is an equidigital number, since it uses as much as digits as its factorization.

31431066266045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286213253214.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 31431066266045 in words is "thirty-one trillion, four hundred thirty-one billion, sixty-six million, two hundred sixty-six thousand, forty-five".