331201431243 has 6 divisors (see below), whose sum is σ = 478402067364. Its totient is φ = 220800954156.

The previous prime is 331201431163. The next prime is 331201431257. The reversal of 331201431243 is 342134102133.

It is a happy number.

331201431243 is a `hidden beast` number, since 3 + 3 + 1 + 201 + 431 + 24 + 3 = 666.

It is not a de Polignac number, because 331201431243 - 2¹³ = 331201423051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331201441243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18400079505 + ... + 18400079522.

It is an arithmetic number, because the mean of its divisors is an integer number (79733677894).

Almost surely, 2^331201431243 is an apocalyptic number.

331201431243 is a deficient number, since it is larger than the sum of its proper divisors (147200636121).

331201431243 is a wasteful number, since it uses less digits than its factorization.

331201431243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36800159033 (or 36800159030 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 331201431243 its reverse (342134102133), we get a palindrome (673335533376).

The spelling of 331201431243 in words is "three hundred thirty-one billion, two hundred one million, four hundred thirty-one thousand, two hundred forty-three".