201942431 has 4 divisors (see below), whose sum is σ = 212571000. Its totient is φ = 191313864.

The previous prime is 201942421. The next prime is 201942437. The reversal of 201942431 is 134249102.

201942431 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 201942431 - 2¹⁴ = 201926047 is a prime.

It is a super-2 number, since 2×201942431² = 81561490876379522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201942431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201942437) 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, 5314256 + ... + 5314293.

It is an arithmetic number, because the mean of its divisors is an integer number (53142750).

Almost surely, 2^201942431 is an apocalyptic number.

201942431 is a deficient number, since it is larger than the sum of its proper divisors (10628569).

201942431 is a wasteful number, since it uses less digits than its factorization.

201942431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10628568.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 201942431 is about 14210.6449888807. The cubic root of 201942431 is about 586.6906856055.

The spelling of 201942431 in words is "two hundred one million, nine hundred forty-two thousand, four hundred thirty-one".