1542230113231 has 4 divisors (see below), whose sum is σ = 1551691647832. Its totient is φ = 1532768578632.

The previous prime is 1542230113223. The next prime is 1542230113247. The reversal of 1542230113231 is 1323110322451.

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 1542230113231 - 2³ = 1542230113223 is a prime.

It is a super-2 number, since 2×1542230113231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1542230113231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542230113201) 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, 4730767056 + ... + 4730767381.

It is an arithmetic number, because the mean of its divisors is an integer number (387922911958).

Almost surely, 2^{1542230113231} is an apocalyptic number.

1542230113231 is a deficient number, since it is larger than the sum of its proper divisors (9461534601).

1542230113231 is an equidigital number, since it uses as much as digits as its factorization.

1542230113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9461534600.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 1542230113231 its reverse (1323110322451), we get a palindrome (2865340435682).

The spelling of 1542230113231 in words is "one trillion, five hundred forty-two billion, two hundred thirty million, one hundred thirteen thousand, two hundred thirty-one".