1023120315355 has 8 divisors (see below), whose sum is σ = 1260926659152. Its totient is φ = 796374731808.

The previous prime is 1023120315323. The next prime is 1023120315359. The reversal of 1023120315355 is 5535130213201.

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 1023120315355 - 2⁵ = 1023120315323 is a prime.

It is a super-2 number, since 2×1023120315355² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1023120315359) 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, 2765189857 + ... + 2765190226.

It is an arithmetic number, because the mean of its divisors is an integer number (157615832394).

Almost surely, 2^{1023120315355} is an apocalyptic number.

1023120315355 is a deficient number, since it is larger than the sum of its proper divisors (237806343797).

1023120315355 is an equidigital number, since it uses as much as digits as its factorization.

1023120315355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530380125.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 1023120315355 its reverse (5535130213201), we get a palindrome (6558250528556).

The spelling of 1023120315355 in words is "one trillion, twenty-three billion, one hundred twenty million, three hundred fifteen thousand, three hundred fifty-five".