131673769 has 2 divisors, whose sum is σ = 131673770. Its totient is φ = 131673768.

The previous prime is 131673767. The next prime is 131673793. The reversal of 131673769 is 967376131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115777600 + 15896169 = 10760^2 + 3987^2 .

It is a cyclic number.

It is not a de Polignac number, because 131673769 - 2¹ = 131673767 is a prime.

It is a super-2 number, since 2×131673769² = 34675962885330722, which contains 22 as substring.

Together with 131673767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (131673761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65836884 + 65836885.

It is an arithmetic number, because the mean of its divisors is an integer number (65836885).

Almost surely, 2^131673769 is an apocalyptic number.

It is an amenable number.

131673769 is a deficient number, since it is larger than the sum of its proper divisors (1).

131673769 is an equidigital number, since it uses as much as digits as its factorization.

131673769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 43.

The square root of 131673769 is about 11474.9191282553. The cubic root of 131673769 is about 508.7445333825.

The spelling of 131673769 in words is "one hundred thirty-one million, six hundred seventy-three thousand, seven hundred sixty-nine".