30312232031 has 2 divisors, whose sum is σ = 30312232032. Its totient is φ = 30312232030.

The previous prime is 30312231979. The next prime is 30312232061. The reversal of 30312232031 is 13023221303.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30312232031 - 2¹⁰ = 30312231007 is a prime.

It is a super-2 number, since 2×30312232031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30312231994 and 30312232012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30312232061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156116015 + 15156116016.

It is an arithmetic number, because the mean of its divisors is an integer number (15156116016).

Almost surely, 2^30312232031 is an apocalyptic number.

30312232031 is a deficient number, since it is larger than the sum of its proper divisors (1).

30312232031 is an equidigital number, since it uses as much as digits as its factorization.

30312232031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 30312232031 its reverse (13023221303), we get a palindrome (43335453334).

The spelling of 30312232031 in words is "thirty billion, three hundred twelve million, two hundred thirty-two thousand, thirty-one".