201251403 has 12 divisors (see below), whose sum is σ = 303335760. Its totient is φ = 128334096.

The previous prime is 201251381. The next prime is 201251447. The reversal of 201251403 is 304152102.

It is not a de Polignac number, because 201251403 - 2¹⁴ = 201235019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201251483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485908 + ... + 486321.

It is an arithmetic number, because the mean of its divisors is an integer number (25277980).

Almost surely, 2^201251403 is an apocalyptic number.

201251403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

201251403 is a deficient number, since it is larger than the sum of its proper divisors (102084357).

201251403 is a wasteful number, since it uses less digits than its factorization.

201251403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972258 (or 972255 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 201251403 is about 14186.3104082774. The cubic root of 201251403 is about 586.0207207279.

It can be divided in two parts, 20125 and 1403, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 201251403 in words is "two hundred one million, two hundred fifty-one thousand, four hundred three".