264331603231331 has 4 divisors (see below), whose sum is σ = 264367827934152. Its totient is φ = 264295378528512.

The previous prime is 264331603231327. The next prime is 264331603231369. The reversal of 264331603231331 is 133132306133462.

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 264331603231331 - 2² = 264331603231327 is a prime.

It is a super-2 number, since 2×264331603231331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264331603201331) 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, 18112340465 + ... + 18112355058.

It is an arithmetic number, because the mean of its divisors is an integer number (66091956983538).

Almost surely, 2^{264331603231331} is an apocalyptic number.

264331603231331 is a deficient number, since it is larger than the sum of its proper divisors (36224702821).

264331603231331 is an equidigital number, since it uses as much as digits as its factorization.

264331603231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36224702820.

The product of its (nonzero) digits is 419904, while the sum is 41.

Adding to 264331603231331 its reverse (133132306133462), we get a palindrome (397463909364793).

The spelling of 264331603231331 in words is "two hundred sixty-four trillion, three hundred thirty-one billion, six hundred three million, two hundred thirty-one thousand, three hundred thirty-one".