231066540031 has 2 divisors, whose sum is σ = 231066540032. Its totient is φ = 231066540030.

The previous prime is 231066539993. The next prime is 231066540041. The reversal of 231066540031 is 130045660132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231066540031 - 2¹¹ = 231066537983 is a prime.

It is a super-2 number, since 2×231066540031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231066539975 and 231066540002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231066540041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115533270015 + 115533270016.

It is an arithmetic number, because the mean of its divisors is an integer number (115533270016).

Almost surely, 2^231066540031 is an apocalyptic number.

231066540031 is a deficient number, since it is larger than the sum of its proper divisors (1).

231066540031 is an equidigital number, since it uses as much as digits as its factorization.

231066540031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 231066540031 in words is "two hundred thirty-one billion, sixty-six million, five hundred forty thousand, thirty-one".