31542143053 has 4 divisors (see below), whose sum is σ = 31580284320. Its totient is φ = 31504001788.

The previous prime is 31542143047. The next prime is 31542143063. The reversal of 31542143053 is 35034124513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35034124513 = 599 ⋅58487687.

It is a cyclic number.

It is not a de Polignac number, because 31542143053 - 2²⁹ = 31005272141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31542143063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19069393 + ... + 19071046.

It is an arithmetic number, because the mean of its divisors is an integer number (7895071080).

Almost surely, 2^31542143053 is an apocalyptic number.

It is an amenable number.

31542143053 is a deficient number, since it is larger than the sum of its proper divisors (38141267).

31542143053 is an equidigital number, since it uses as much as digits as its factorization.

31542143053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38141266.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 31542143053 its reverse (35034124513), we get a palindrome (66576267566).

The spelling of 31542143053 in words is "thirty-one billion, five hundred forty-two million, one hundred forty-three thousand, fifty-three".