201532431 has 4 divisors (see below), whose sum is σ = 268709912. Its totient is φ = 134354952.

The previous prime is 201532393. The next prime is 201532469. The reversal of 201532431 is 134235102.

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

It is an interprime number because it is at equal distance from previous prime (201532393) and next prime (201532469).

It is not a de Polignac number, because 201532431 - 2⁶ = 201532367 is a prime.

It is a super-2 number, since 2×201532431² = 81230641489539522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201532398 and 201532407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201532231) 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, 33588736 + ... + 33588741.

It is an arithmetic number, because the mean of its divisors is an integer number (67177478).

Almost surely, 2^201532431 is an apocalyptic number.

201532431 is a deficient number, since it is larger than the sum of its proper divisors (67177481).

201532431 is an equidigital number, since it uses as much as digits as its factorization.

201532431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67177480.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 201532431 is about 14196.2118538714. The cubic root of 201532431 is about 586.2933674954.

Adding to 201532431 its reverse (134235102), we get a palindrome (335767533).

The spelling of 201532431 in words is "two hundred one million, five hundred thirty-two thousand, four hundred thirty-one".