331201030231331 has 4 divisors (see below), whose sum is σ = 356678032556832. Its totient is φ = 305724027905832.

The previous prime is 331201030231277. The next prime is 331201030231361. The reversal of 331201030231331 is 133132030102133.

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 331201030231331 - 2¹⁰ = 331201030230307 is a prime.

It is a super-2 number, since 2×331201030231331² (a number of 30 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 331201030231331.

It is not an unprimeable number, because it can be changed into a prime (331201030231361) 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, 12738501162731 + ... + 12738501162756.

It is an arithmetic number, because the mean of its divisors is an integer number (89169508139208).

Almost surely, 2^{331201030231331} is an apocalyptic number.

331201030231331 is a deficient number, since it is larger than the sum of its proper divisors (25477002325501).

331201030231331 is a wasteful number, since it uses less digits than its factorization.

331201030231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25477002325500.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 331201030231331 its reverse (133132030102133), we get a palindrome (464333060333464).

The spelling of 331201030231331 in words is "three hundred thirty-one trillion, two hundred one billion, thirty million, two hundred thirty-one thousand, three hundred thirty-one".