1231210031307 has 8 divisors (see below), whose sum is σ = 1641620019600. Its totient is φ = 820803365280.

The previous prime is 1231210031287. The next prime is 1231210031333. The reversal of 1231210031307 is 7031300121321.

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

It is not a de Polignac number, because 1231210031307 - 2²² = 1231205837003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231210031707) 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, 226257 + ... + 1585437.

It is an arithmetic number, because the mean of its divisors is an integer number (205202502450).

Almost surely, 2^{1231210031307} is an apocalyptic number.

1231210031307 is a deficient number, since it is larger than the sum of its proper divisors (410409988293).

1231210031307 is a wasteful number, since it uses less digits than its factorization.

1231210031307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661133.

The product of its (nonzero) digits is 756, while the sum is 24.

Adding to 1231210031307 its reverse (7031300121321), we get a palindrome (8262510152628).

The spelling of 1231210031307 in words is "one trillion, two hundred thirty-one billion, two hundred ten million, thirty-one thousand, three hundred seven".