1356031321123 has 8 divisors (see below), whose sum is σ = 1361197061120. Its totient is φ = 1350866772360.

The previous prime is 1356031321093. The next prime is 1356031321129. The reversal of 1356031321123 is 3211231306531.

It is a happy number.

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 1356031321123 - 2³⁷ = 1218592367651 is a prime.

It is a super-2 number, since 2×1356031321123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1356031321129) 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, 2017408 + ... + 2604226.

It is an arithmetic number, because the mean of its divisors is an integer number (170149632640).

Almost surely, 2^{1356031321123} is an apocalyptic number.

1356031321123 is a deficient number, since it is larger than the sum of its proper divisors (5165739997).

1356031321123 is an equidigital number, since it uses as much as digits as its factorization.

1356031321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595617.

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 1356031321123 its reverse (3211231306531), we get a palindrome (4567262627654).

The spelling of 1356031321123 in words is "one trillion, three hundred fifty-six billion, thirty-one million, three hundred twenty-one thousand, one hundred twenty-three".