203490307801 has 27 divisors (see below), whose sum is σ = 233950028277. Its totient is φ = 176848851960.

The previous prime is 203490307733. The next prime is 203490307837. The reversal of 203490307801 is 108703094302.

The square root of 203490307801 is 451099.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 203490307801 - 2⁷ = 203490307673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203490307861) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 114127156 + ... + 114128938.

Almost surely, 2^203490307801 is an apocalyptic number.

203490307801 is the 451099-th square number.

203490307801 is the 225550-th centered octagonal number.

It is an amenable number.

203490307801 is a deficient number, since it is larger than the sum of its proper divisors (30459720476).

203490307801 is an frugal number, since it uses more digits than its factorization.

203490307801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3634 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 203490307801 in words is "two hundred three billion, four hundred ninety million, three hundred seven thousand, eight hundred one".