351222887 has 2 divisors, whose sum is σ = 351222888. Its totient is φ = 351222886.

The previous prime is 351222863. The next prime is 351222889. The reversal of 351222887 is 788222153.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 351222887 - 2⁸ = 351222631 is a prime.

It is a super-2 number, since 2×351222887² = 246715032705229538, which contains 22 as substring.

Together with 351222889, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 351222887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351222889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175611443 + 175611444.

It is an arithmetic number, because the mean of its divisors is an integer number (175611444).

Almost surely, 2^351222887 is an apocalyptic number.

351222887 is a deficient number, since it is larger than the sum of its proper divisors (1).

351222887 is an equidigital number, since it uses as much as digits as its factorization.

351222887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 351222887 is about 18740.9414651452. The cubic root of 351222887 is about 705.5496858154.

The spelling of 351222887 in words is "three hundred fifty-one million, two hundred twenty-two thousand, eight hundred eighty-seven".