12312430031 has 4 divisors (see below), whose sum is σ = 13431741864. Its totient is φ = 11193118200.

The previous prime is 12312430019. The next prime is 12312430061. The reversal of 12312430031 is 13003421321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12312430031 - 2²⁶ = 12245321167 is a prime.

It is a super-2 number, since 2×12312430031² (a number of 21 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 = 12312429985 and 12312430012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312430061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559655900 + ... + 559655921.

It is an arithmetic number, because the mean of its divisors is an integer number (3357935466).

Almost surely, 2^12312430031 is an apocalyptic number.

12312430031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12312430031 is a deficient number, since it is larger than the sum of its proper divisors (1119311833).

12312430031 is a wasteful number, since it uses less digits than its factorization.

12312430031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119311832.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12312430031 its reverse (13003421321), we get a palindrome (25315851352).

The spelling of 12312430031 in words is "twelve billion, three hundred twelve million, four hundred thirty thousand, thirty-one".