201501431 has 4 divisors (see below), whose sum is σ = 201533232. Its totient is φ = 201469632.

The previous prime is 201501427. The next prime is 201501463. The reversal of 201501431 is 134105102.

201501431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201501431 - 2² = 201501427 is a prime.

It is a super-2 number, since 2×201501431² = 81205653390095522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201501481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2795 + ... + 20268.

It is an arithmetic number, because the mean of its divisors is an integer number (50383308).

Almost surely, 2^201501431 is an apocalyptic number.

201501431 is a deficient number, since it is larger than the sum of its proper divisors (31801).

201501431 is an equidigital number, since it uses as much as digits as its factorization.

201501431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31800.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 201501431 is about 14195.1199713141. The cubic root of 201501431 is about 586.2633044657.

Adding to 201501431 its reverse (134105102), we get a palindrome (335606533).

The spelling of 201501431 in words is "two hundred one million, five hundred one thousand, four hundred thirty-one".