345351887 has 2 divisors, whose sum is σ = 345351888. Its totient is φ = 345351886.

The previous prime is 345351883. The next prime is 345351943. The reversal of 345351887 is 788153543.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (788153543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345351887 - 2² = 345351883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345351883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172675943 + 172675944.

It is an arithmetic number, because the mean of its divisors is an integer number (172675944).

Almost surely, 2^345351887 is an apocalyptic number.

345351887 is a deficient number, since it is larger than the sum of its proper divisors (1).

345351887 is an equidigital number, since it uses as much as digits as its factorization.

345351887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 44.

The square root of 345351887 is about 18583.6456864631. The cubic root of 345351887 is about 701.5962802044.

The spelling of 345351887 in words is "three hundred forty-five million, three hundred fifty-one thousand, eight hundred eighty-seven".