67347512131 has 2 divisors, whose sum is σ = 67347512132. Its totient is φ = 67347512130.

The previous prime is 67347512129. The next prime is 67347512213. The reversal of 67347512131 is 13121574376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67347512131 - 2¹ = 67347512129 is a prime.

It is a super-2 number, since 2×67347512131² (a number of 22 digits) contains 22 as substring.

Together with 67347512129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (67347512101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33673756065 + 33673756066.

It is an arithmetic number, because the mean of its divisors is an integer number (33673756066).

Almost surely, 2^67347512131 is an apocalyptic number.

67347512131 is a deficient number, since it is larger than the sum of its proper divisors (1).

67347512131 is an equidigital number, since it uses as much as digits as its factorization.

67347512131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The spelling of 67347512131 in words is "sixty-seven billion, three hundred forty-seven million, five hundred twelve thousand, one hundred thirty-one".