312030031 has 2 divisors, whose sum is σ = 312030032. Its totient is φ = 312030030.

The previous prime is 312030007. The next prime is 312030041. The reversal of 312030031 is 130030213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312030031 - 2⁷ = 312029903 is a prime.

It is a super-2 number, since 2×312030031² = 194725480491721922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312029993 and 312030020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312030001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156015015 + 156015016.

It is an arithmetic number, because the mean of its divisors is an integer number (156015016).

Almost surely, 2^312030031 is an apocalyptic number.

312030031 is a deficient number, since it is larger than the sum of its proper divisors (1).

312030031 is an equidigital number, since it uses as much as digits as its factorization.

312030031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 312030031 is about 17664.3717974911. The cubic root of 312030031 is about 678.2640489027.

Adding to 312030031 its reverse (130030213), we get a palindrome (442060244).

The spelling of 312030031 in words is "three hundred twelve million, thirty thousand, thirty-one".