1301231311023 has 8 divisors (see below), whose sum is σ = 1982828664448. Its totient is φ = 743560749144.

The previous prime is 1301231311019. The next prime is 1301231311031. The reversal of 1301231311023 is 3201131321031.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1301231311023 - 2² = 1301231311019 is a prime.

It is a super-2 number, since 2×1301231311023² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 61963395763 = 1301231311023 / (1 + 3 + 0 + 1 + 2 + 3 + 1 + 3 + 1 + 1 + 0 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301231313023) 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, 30981697861 + ... + 30981697902.

It is an arithmetic number, because the mean of its divisors is an integer number (247853583056).

Almost surely, 2^{1301231311023} is an apocalyptic number.

1301231311023 is a deficient number, since it is larger than the sum of its proper divisors (681597353425).

1301231311023 is an equidigital number, since it uses as much as digits as its factorization.

1301231311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61963395773.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1301231311023 its reverse (3201131321031), we get a palindrome (4502362632054).

The spelling of 1301231311023 in words is "one trillion, three hundred one billion, two hundred thirty-one million, three hundred eleven thousand, twenty-three".