1213312300431 has 96 divisors (see below), whose sum is σ = 2062092162816. Its totient is φ = 627492096000.

The previous prime is 1213312300427. The next prime is 1213312300433. The reversal of 1213312300431 is 1340032133121.

It is not a de Polignac number, because 1213312300431 - 2² = 1213312300427 is a prime.

It is a super-2 number, since 2×1213312300431² (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 (1213312300433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 462918301 + ... + 462920921.

It is an arithmetic number, because the mean of its divisors is an integer number (21480126696).

Almost surely, 2^{1213312300431} is an apocalyptic number.

1213312300431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1213312300431 is a deficient number, since it is larger than the sum of its proper divisors (848779862385).

1213312300431 is a wasteful number, since it uses less digits than its factorization.

1213312300431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813 (or 3806 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1213312300431 its reverse (1340032133121), we get a palindrome (2553344433552).

The spelling of 1213312300431 in words is "one trillion, two hundred thirteen billion, three hundred twelve million, three hundred thousand, four hundred thirty-one".