201238431 has 32 divisors (see below), whose sum is σ = 286530048. Its totient is φ = 125368320.

The previous prime is 201238399. The next prime is 201238463. The reversal of 201238431 is 134832102.

It is an interprime number because it is at equal distance from previous prime (201238399) and next prime (201238463).

It is not a de Polignac number, because 201238431 - 2⁵ = 201238399 is a prime.

It is a super-2 number, since 2×201238431² = 80993812222683522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201238931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 716011 + ... + 716291.

It is an arithmetic number, because the mean of its divisors is an integer number (8954064).

Almost surely, 2^201238431 is an apocalyptic number.

201238431 is a deficient number, since it is larger than the sum of its proper divisors (85291617).

201238431 is a wasteful number, since it uses less digits than its factorization.

201238431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 201238431 is about 14185.8531995788. The cubic root of 201238431 is about 586.0081294713.

The spelling of 201238431 in words is "two hundred one million, two hundred thirty-eight thousand, four hundred thirty-one".