1142120315431 has 4 divisors (see below), whose sum is σ = 1202231911000. Its totient is φ = 1082008719864.

The previous prime is 1142120315423. The next prime is 1142120315461. The reversal of 1142120315431 is 1345130212411.

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 1142120315431 - 2³ = 1142120315423 is a prime.

It is a super-2 number, since 2×1142120315431² (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 1142120315431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142120315411) 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 3 ways as a sum of consecutive naturals, for example, 30055797756 + ... + 30055797793.

It is an arithmetic number, because the mean of its divisors is an integer number (300557977750).

Almost surely, 2^{1142120315431} is an apocalyptic number.

1142120315431 is a deficient number, since it is larger than the sum of its proper divisors (60111595569).

1142120315431 is an equidigital number, since it uses as much as digits as its factorization.

1142120315431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60111595568.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 1142120315431 its reverse (1345130212411), we get a palindrome (2487250527842).

The spelling of 1142120315431 in words is "one trillion, one hundred forty-two billion, one hundred twenty million, three hundred fifteen thousand, four hundred thirty-one".