1201731503 has 8 divisors (see below), whose sum is σ = 1374001440. Its totient is φ = 1029610080.

The previous prime is 1201731481. The next prime is 1201731511. The reversal of 1201731503 is 3051371021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201731503 - 2²² = 1197537199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201731563) 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 7 ways as a sum of consecutive naturals, for example, 19208 + ... + 52653.

It is an arithmetic number, because the mean of its divisors is an integer number (171750180).

Almost surely, 2^1201731503 is an apocalyptic number.

1201731503 is a deficient number, since it is larger than the sum of its proper divisors (172269937).

1201731503 is an equidigital number, since it uses as much as digits as its factorization.

1201731503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74257.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 1201731503 is about 34665.9992355622. Note that the first 3 decimals coincide. The cubic root of 1201731503 is about 1063.1694336883.

The spelling of 1201731503 in words is "one billion, two hundred one million, seven hundred thirty-one thousand, five hundred three".