42300031031 has 2 divisors, whose sum is σ = 42300031032. Its totient is φ = 42300031030.

The previous prime is 42300031027. The next prime is 42300031043. The reversal of 42300031031 is 13013000324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42300031031 - 2² = 42300031027 is a prime.

It is a super-2 number, since 2×42300031031² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42300031831) 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 as a sum of consecutive naturals, namely, 21150015515 + 21150015516.

It is an arithmetic number, because the mean of its divisors is an integer number (21150015516).

Almost surely, 2^42300031031 is an apocalyptic number.

42300031031 is a deficient number, since it is larger than the sum of its proper divisors (1).

42300031031 is an equidigital number, since it uses as much as digits as its factorization.

42300031031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 42300031031 its reverse (13013000324), we get a palindrome (55313031355).

The spelling of 42300031031 in words is "forty-two billion, three hundred million, thirty-one thousand, thirty-one".