70667131 has 2 divisors, whose sum is σ = 70667132. Its totient is φ = 70667130.

The previous prime is 70667123. The next prime is 70667141. The reversal of 70667131 is 13176607.

It is a weak prime.

It is an emirp because it is prime and its reverse (13176607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70667131 - 2³ = 70667123 is a prime.

It is a super-2 number, since 2×70667131² = 9987686807542322, 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 = 70667093 and 70667102.

It is not a weakly prime, because it can be changed into another prime (70667101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35333565 + 35333566.

It is an arithmetic number, because the mean of its divisors is an integer number (35333566).

Almost surely, 2^70667131 is an apocalyptic number.

70667131 is a deficient number, since it is larger than the sum of its proper divisors (1).

70667131 is an equidigital number, since it uses as much as digits as its factorization.

70667131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 70667131 is about 8406.3744265884. The cubic root of 70667131 is about 413.4336484030.

The spelling of 70667131 in words is "seventy million, six hundred sixty-seven thousand, one hundred thirty-one".