13012011031 has 4 divisors (see below), whose sum is σ = 13195278864. Its totient is φ = 12828743200.

The previous prime is 13012010929. The next prime is 13012011041. The reversal of 13012011031 is 13011021031.

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

It is a cyclic number.

It is not a de Polignac number, because 13012011031 - 2³¹ = 10864527383 is a prime.

It is a super-2 number, since 2×13012011031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012011041) 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, 91633810 + ... + 91633951.

It is an arithmetic number, because the mean of its divisors is an integer number (3298819716).

Almost surely, 2^13012011031 is an apocalyptic number.

13012011031 is a deficient number, since it is larger than the sum of its proper divisors (183267833).

13012011031 is an equidigital number, since it uses as much as digits as its factorization.

13012011031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183267832.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 13012011031 its reverse (13011021031), we get a palindrome (26023032062).

The spelling of 13012011031 in words is "thirteen billion, twelve million, eleven thousand, thirty-one".