13021031 has 8 divisors (see below), whose sum is σ = 13915440. Its totient is φ = 12140928.

The previous prime is 13021027. The next prime is 13021033. The reversal of 13021031 is 13012031.

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 13021031 - 2² = 13021027 is a prime.

It is a super-2 number, since 2×13021031² = 339094496605922, which 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 (13021033) 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, 1661 + ... + 5366.

It is an arithmetic number, because the mean of its divisors is an integer number (1739430).

Almost surely, 2^13021031 is an apocalyptic number.

13021031 is a deficient number, since it is larger than the sum of its proper divisors (894409).

13021031 is a wasteful number, since it uses less digits than its factorization.

13021031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7153.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 13021031 is about 3608.4665718280. The cubic root of 13021031 is about 235.2601976875.

Adding to 13021031 its reverse (13012031), we get a palindrome (26033062).

The spelling of 13021031 in words is "thirteen million, twenty-one thousand, thirty-one".