12013131031 has 8 divisors (see below), whose sum is σ = 13106048400. Its totient is φ = 10920349440.

The previous prime is 12013130981. The next prime is 12013131037. The reversal of 12013131031 is 13013131021.

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

It is not a de Polignac number, because 12013131031 - 2¹³ = 12013122839 is a prime.

It is a super-2 number, since 2×12013131031² (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 = 12013130996 and 12013131014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013131037) 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, 267465 + ... + 309133.

It is an arithmetic number, because the mean of its divisors is an integer number (1638256050).

Almost surely, 2^12013131031 is an apocalyptic number.

12013131031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12013131031 is a deficient number, since it is larger than the sum of its proper divisors (1092917369).

12013131031 is a wasteful number, since it uses less digits than its factorization.

12013131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67889.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 12013131031 its reverse (13013131021), we get a palindrome (25026262052).

The spelling of 12013131031 in words is "twelve billion, thirteen million, one hundred thirty-one thousand, thirty-one".