67400073400031 has 2 divisors, whose sum is σ = 67400073400032. Its totient is φ = 67400073400030.

The previous prime is 67400073400003. The next prime is 67400073400057. The reversal of 67400073400031 is 13000437000476.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67400073400031 is a prime.

It is a super-2 number, since 2×67400073400031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67400073399964 and 67400073400000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67400070400031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33700036700015 + 33700036700016.

It is an arithmetic number, because the mean of its divisors is an integer number (33700036700016).

Almost surely, 2^{67400073400031} is an apocalyptic number.

67400073400031 is a deficient number, since it is larger than the sum of its proper divisors (1).

67400073400031 is an equidigital number, since it uses as much as digits as its factorization.

67400073400031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 35.

The spelling of 67400073400031 in words is "sixty-seven trillion, four hundred billion, seventy-three million, four hundred thousand, thirty-one".