12302031 has 16 divisors (see below), whose sum is σ = 19065600. Its totient is φ = 6909888.

The previous prime is 12302023. The next prime is 12302039. The reversal of 12302031 is 13020321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12302023) and next prime (12302039).

It is not a de Polignac number, because 12302031 - 2³ = 12302023 is a prime.

It is a super-2 number, since 2×12302031² = 302679933449922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12301998 and 12302016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12302039) 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 15 ways as a sum of consecutive naturals, for example, 3726 + ... + 6203.

It is an arithmetic number, because the mean of its divisors is an integer number (1191600).

Almost surely, 2^12302031 is an apocalyptic number.

12302031 is a deficient number, since it is larger than the sum of its proper divisors (6763569).

12302031 is an equidigital number, since it uses as much as digits as its factorization.

12302031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9998.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12302031 is about 3507.4251239335. The cubic root of 12302031 is about 230.8477285860.

Adding to 12302031 its reverse (13020321), we get a palindrome (25322352).

It can be divided in two parts, 1 and 2302031, that added together give a palindrome (2302032).

The spelling of 12302031 in words is "twelve million, three hundred two thousand, thirty-one".