340533987 has 32 divisors (see below), whose sum is σ = 496238400. Its totient is φ = 206868480.

The previous prime is 340533983. The next prime is 340534001. The reversal of 340533987 is 789335043.

It is a happy number.

It is not a de Polignac number, because 340533987 - 2² = 340533983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340533983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311013 + ... + 312105.

It is an arithmetic number, because the mean of its divisors is an integer number (15507450).

Almost surely, 2^340533987 is an apocalyptic number.

340533987 is a deficient number, since it is larger than the sum of its proper divisors (155704413).

340533987 is a wasteful number, since it uses less digits than its factorization.

340533987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303.

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 340533987 is about 18453.5629892983. The cubic root of 340533987 is about 698.3184037050.

The spelling of 340533987 in words is "three hundred forty million, five hundred thirty-three thousand, nine hundred eighty-seven".