231306433042 has 16 divisors (see below), whose sum is σ = 359065146240. Its totient is φ = 111621192592.

The previous prime is 231306433037. The next prime is 231306433049. The reversal of 231306433042 is 240334603132.

It is a super-2 number, since 2×231306433042² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231306432995 and 231306433013.

It is not an unprimeable number, because it can be changed into a prime (231306433049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636628 + ... + 931615.

It is an arithmetic number, because the mean of its divisors is an integer number (22441571640).

Almost surely, 2^231306433042 is an apocalyptic number.

231306433042 is a deficient number, since it is larger than the sum of its proper divisors (127758713198).

231306433042 is a wasteful number, since it uses less digits than its factorization.

231306433042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570817.

The product of its (nonzero) digits is 31104, while the sum is 31.

The spelling of 231306433042 in words is "two hundred thirty-one billion, three hundred six million, four hundred thirty-three thousand, forty-two".