109547987231 has 2 divisors, whose sum is σ = 109547987232. Its totient is φ = 109547987230.

The previous prime is 109547987077. The next prime is 109547987309. The reversal of 109547987231 is 132789745901.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109547987231 is a prime.

It is a super-2 number, since 2×109547987231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109547989231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54773993615 + 54773993616.

It is an arithmetic number, because the mean of its divisors is an integer number (54773993616).

Almost surely, 2^109547987231 is an apocalyptic number.

109547987231 is a deficient number, since it is larger than the sum of its proper divisors (1).

109547987231 is an equidigital number, since it uses as much as digits as its factorization.

109547987231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 109547987231 in words is "one hundred nine billion, five hundred forty-seven million, nine hundred eighty-seven thousand, two hundred thirty-one".