203471345 has 32 divisors (see below), whose sum is σ = 306118656. Its totient is φ = 126129600.

The previous prime is 203471341. The next prime is 203471347. The reversal of 203471345 is 543174302.

It is a happy number.

It is not a de Polignac number, because 203471345 - 2² = 203471341 is a prime.

It is a super-2 number, since 2×203471345² = 82801176472218050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203471341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72152 + ... + 74918.

It is an arithmetic number, because the mean of its divisors is an integer number (9566208).

Almost surely, 2^203471345 is an apocalyptic number.

It is an amenable number.

203471345 is a deficient number, since it is larger than the sum of its proper divisors (102647311).

203471345 is a wasteful number, since it uses less digits than its factorization.

203471345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 203471345 is about 14264.3382250983. The cubic root of 203471345 is about 588.1675839681.

The spelling of 203471345 in words is "two hundred three million, four hundred seventy-one thousand, three hundred forty-five".