12031613 has 8 divisors (see below), whose sum is σ = 13200096. Its totient is φ = 10875600.

The previous prime is 12031603. The next prime is 12031619. The reversal of 12031613 is 31613021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12031613 - 2¹⁴ = 12015229 is a prime.

It is a super-2 number, since 2×12031613² = 289519422763538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031591 and 12031600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031 + ... + 5012.

It is an arithmetic number, because the mean of its divisors is an integer number (1650012).

Almost surely, 2^12031613 is an apocalyptic number.

It is an amenable number.

12031613 is a deficient number, since it is larger than the sum of its proper divisors (1168483).

12031613 is a wasteful number, since it uses less digits than its factorization.

12031613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6235.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 12031613 is about 3468.6615574311. The cubic root of 12031613 is about 229.1437158430.

Adding to 12031613 its reverse (31613021), we get a palindrome (43644634).

The spelling of 12031613 in words is "twelve million, thirty-one thousand, six hundred thirteen".