1302313311231 has 4 divisors (see below), whose sum is σ = 1736417748312. Its totient is φ = 868208874152.

The previous prime is 1302313311223. The next prime is 1302313311241. The reversal of 1302313311231 is 1321133132031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1302313311231 - 2³ = 1302313311223 is a prime.

It is a super-2 number, since 2×1302313311231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302313311241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217052218536 + ... + 217052218541.

It is an arithmetic number, because the mean of its divisors is an integer number (434104437078).

Almost surely, 2^{1302313311231} is an apocalyptic number.

1302313311231 is a deficient number, since it is larger than the sum of its proper divisors (434104437081).

1302313311231 is an equidigital number, since it uses as much as digits as its factorization.

1302313311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434104437080.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1302313311231 its reverse (1321133132031), we get a palindrome (2623446443262).

The spelling of 1302313311231 in words is "one trillion, three hundred two billion, three hundred thirteen million, three hundred eleven thousand, two hundred thirty-one".