70143287 has 2 divisors, whose sum is σ = 70143288. Its totient is φ = 70143286.

The previous prime is 70143263. The next prime is 70143289. The reversal of 70143287 is 78234107.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70143287 - 2¹⁸ = 69881143 is a prime.

It is a super-2 number, since 2×70143287² = 9840161422328738, which contains 22 as substring.

Together with 70143289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70143289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35071643 + 35071644.

It is an arithmetic number, because the mean of its divisors is an integer number (35071644).

Almost surely, 2^70143287 is an apocalyptic number.

70143287 is a deficient number, since it is larger than the sum of its proper divisors (1).

70143287 is an equidigital number, since it uses as much as digits as its factorization.

70143287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 70143287 is about 8375.1589238653. The cubic root of 70143287 is about 412.4095414746.

It can be divided in two parts, 7014 and 3287, that added together give a palindrome (10301).

The spelling of 70143287 in words is "seventy million, one hundred forty-three thousand, two hundred eighty-seven".