231030001331 has 4 divisors (see below), whose sum is σ = 234817378464. Its totient is φ = 227242624200.

The previous prime is 231030001303. The next prime is 231030001357. The reversal of 231030001331 is 133100030132.

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 231030001331 - 2²⁶ = 230962892467 is a prime.

It is a super-2 number, since 2×231030001331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231030001381) 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, 1893688475 + ... + 1893688596.

It is an arithmetic number, because the mean of its divisors is an integer number (58704344616).

Almost surely, 2^231030001331 is an apocalyptic number.

231030001331 is a deficient number, since it is larger than the sum of its proper divisors (3787377133).

231030001331 is an equidigital number, since it uses as much as digits as its factorization.

231030001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3787377132.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 231030001331 its reverse (133100030132), we get a palindrome (364130031463).

The spelling of 231030001331 in words is "two hundred thirty-one billion, thirty million, one thousand, three hundred thirty-one".