13307775331 has 4 divisors (see below), whose sum is σ = 13308769792. Its totient is φ = 13306780872.

The previous prime is 13307775307. The next prime is 13307775337. The reversal of 13307775331 is 13357770331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13357770331 = 809 ⋅16511459.

It is a cyclic number.

It is not a de Polignac number, because 13307775331 - 2¹³ = 13307767139 is a prime.

It is a super-2 number, since 2×13307775331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13307775337) 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, 476880 + ... + 504013.

It is an arithmetic number, because the mean of its divisors is an integer number (3327192448).

Almost surely, 2^13307775331 is an apocalyptic number.

13307775331 is a deficient number, since it is larger than the sum of its proper divisors (994461).

13307775331 is an equidigital number, since it uses as much as digits as its factorization.

13307775331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994460.

The product of its (nonzero) digits is 138915, while the sum is 40.

Subtracting 13307775331 from its reverse (13357770331), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 13307775331 in words is "thirteen billion, three hundred seven million, seven hundred seventy-five thousand, three hundred thirty-one".