67113731 has 2 divisors, whose sum is σ = 67113732. Its totient is φ = 67113730.

The previous prime is 67113727. The next prime is 67113749. The reversal of 67113731 is 13731176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67113731 - 2² = 67113727 is a prime.

It is a super-2 number, since 2×67113731² = 9008505777480722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 67113694 and 67113703.

It is not a weakly prime, because it can be changed into another prime (67113721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33556865 + 33556866.

It is an arithmetic number, because the mean of its divisors is an integer number (33556866).

Almost surely, 2^67113731 is an apocalyptic number.

67113731 is a deficient number, since it is larger than the sum of its proper divisors (1).

67113731 is an equidigital number, since it uses as much as digits as its factorization.

67113731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646, while the sum is 29.

The square root of 67113731 is about 8192.2970527197. The cubic root of 67113731 is about 406.3844930320.

The spelling of 67113731 in words is "sixty-seven million, one hundred thirteen thousand, seven hundred thirty-one".