305230402031 has 32 divisors (see below), whose sum is σ = 326779453440. Its totient is φ = 284635929600.

The previous prime is 305230402021. The next prime is 305230402051. The reversal of 305230402031 is 130204032503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305230402031 is a prime.

It is a super-2 number, since 2×305230402031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305230401988 and 305230402006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305230402021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31246310 + ... + 31256076.

It is an arithmetic number, because the mean of its divisors is an integer number (10211857920).

Almost surely, 2^305230402031 is an apocalyptic number.

305230402031 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

305230402031 is a deficient number, since it is larger than the sum of its proper divisors (21549051409).

305230402031 is a wasteful number, since it uses less digits than its factorization.

305230402031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10175.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 305230402031 its reverse (130204032503), we get a palindrome (435434434534).

The spelling of 305230402031 in words is "three hundred five billion, two hundred thirty million, four hundred two thousand, thirty-one".