1321302312031 has 16 divisors (see below), whose sum is σ = 1508608393600. Its totient is φ = 1147158078048.

The previous prime is 1321302311971. The next prime is 1321302312067. The reversal of 1321302312031 is 1302132031231.

It is a cyclic number.

It is not a de Polignac number, because 1321302312031 - 2¹⁵ = 1321302279263 is a prime.

It is a super-2 number, since 2×1321302312031² (a number of 25 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 = 1321302311993 and 1321302312011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321302312091) 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, 19208121 + ... + 19276786.

It is an arithmetic number, because the mean of its divisors is an integer number (94288024600).

Almost surely, 2^{1321302312031} is an apocalyptic number.

1321302312031 is a deficient number, since it is larger than the sum of its proper divisors (187306081569).

1321302312031 is a wasteful number, since it uses less digits than its factorization.

1321302312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38485078.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1321302312031 its reverse (1302132031231), we get a palindrome (2623434343262).

The spelling of 1321302312031 in words is "one trillion, three hundred twenty-one billion, three hundred two million, three hundred twelve thousand, thirty-one".