1313231023 has 8 divisors (see below), whose sum is σ = 1475738208. Its totient is φ = 1159508064.

The previous prime is 1313230993. The next prime is 1313231033. The reversal of 1313231023 is 3201323131.

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

It is not a de Polignac number, because 1313231023 - 2⁵ = 1313230991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313231033) 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, 2195740 + ... + 2196337.

It is an arithmetic number, because the mean of its divisors is an integer number (184467276).

Almost surely, 2^1313231023 is an apocalyptic number.

1313231023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1313231023 is a deficient number, since it is larger than the sum of its proper divisors (162507185).

1313231023 is a wasteful number, since it uses less digits than its factorization.

1313231023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392113.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1313231023 is about 36238.5295369445. The cubic root of 1313231023 is about 1095.0830189414.

Adding to 1313231023 its reverse (3201323131), we get a palindrome (4514554154).

The spelling of 1313231023 in words is "one billion, three hundred thirteen million, two hundred thirty-one thousand, twenty-three".