1231451142333 has 16 divisors (see below), whose sum is σ = 1663984459200. Its totient is φ = 809969618304.

The previous prime is 1231451142277. The next prime is 1231451142349. The reversal of 1231451142333 is 3332411541321.

It is not a de Polignac number, because 1231451142333 - 2¹⁸ = 1231450880189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231451142294 and 1231451142303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231451142373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3191008 + ... + 3556041.

It is an arithmetic number, because the mean of its divisors is an integer number (103999028700).

Almost surely, 2^{1231451142333} is an apocalyptic number.

It is an amenable number.

1231451142333 is a deficient number, since it is larger than the sum of its proper divisors (432533316867).

1231451142333 is an equidigital number, since it uses as much as digits as its factorization.

1231451142333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747868.

The product of its digits is 25920, while the sum is 33.

Adding to 1231451142333 its reverse (3332411541321), we get a palindrome (4563862683654).

The spelling of 1231451142333 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-one million, one hundred forty-two thousand, three hundred thirty-three".