1321010013031 has 16 divisors (see below), whose sum is σ = 1356410072160. Its totient is φ = 1286000876160.

The previous prime is 1321010013019. The next prime is 1321010013041. The reversal of 1321010013031 is 1303100101231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321010013031 is a prime.

It is a super-2 number, since 2×1321010013031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321010012996 and 1321010013014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321010013041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77565625 + ... + 77582653.

It is an arithmetic number, because the mean of its divisors is an integer number (84775629510).

Almost surely, 2^{1321010013031} is an apocalyptic number.

1321010013031 is a deficient number, since it is larger than the sum of its proper divisors (35400059129).

1321010013031 is a wasteful number, since it uses less digits than its factorization.

1321010013031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28386.

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

Adding to 1321010013031 its reverse (1303100101231), we get a palindrome (2624110114262).

The spelling of 1321010013031 in words is "one trillion, three hundred twenty-one billion, ten million, thirteen thousand, thirty-one".