431340101 has 2 divisors, whose sum is σ = 431340102. Its totient is φ = 431340100.

The previous prime is 431340083. The next prime is 431340157. The reversal of 431340101 is 101043134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369639076 + 61701025 = 19226^2 + 7855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431340101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 431340101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431340401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215670050 + 215670051.

It is an arithmetic number, because the mean of its divisors is an integer number (215670051).

Almost surely, 2^431340101 is an apocalyptic number.

It is an amenable number.

431340101 is a deficient number, since it is larger than the sum of its proper divisors (1).

431340101 is an equidigital number, since it uses as much as digits as its factorization.

431340101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 431340101 is about 20768.7289211449. The cubic root of 431340101 is about 755.5675168145.

Adding to 431340101 its reverse (101043134), we get a palindrome (532383235).

The spelling of 431340101 in words is "four hundred thirty-one million, three hundred forty thousand, one hundred one".