331004331431 has 4 divisors (see below), whose sum is σ = 331328528664. Its totient is φ = 330680134200.

The previous prime is 331004331409. The next prime is 331004331473. The reversal of 331004331431 is 134133400133.

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 331004331431 - 2⁶ = 331004331367 is a prime.

It is a super-2 number, since 2×331004331431² (a number of 24 digits) 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 331004331431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331004331131) 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, 162097085 + ... + 162099126.

It is an arithmetic number, because the mean of its divisors is an integer number (82832132166).

Almost surely, 2^331004331431 is an apocalyptic number.

331004331431 is a deficient number, since it is larger than the sum of its proper divisors (324197233).

331004331431 is a wasteful number, since it uses less digits than its factorization.

331004331431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324197232.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 331004331431 its reverse (134133400133), we get a palindrome (465137731564).

The spelling of 331004331431 in words is "three hundred thirty-one billion, four million, three hundred thirty-one thousand, four hundred thirty-one".