42103131302431 has 4 divisors (see below), whose sum is σ = 42106629123832. Its totient is φ = 42099633481032.

The previous prime is 42103131302413. The next prime is 42103131302509. The reversal of 42103131302431 is 13420313130124.

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 42103131302431 - 2¹⁷ = 42103131171359 is a prime.

It is a super-2 number, since 2×42103131302431² (a number of 28 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 42103131302431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42103131302731) 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, 1748892645 + ... + 1748916718.

It is an arithmetic number, because the mean of its divisors is an integer number (10526657280958).

Almost surely, 2^{42103131302431} is an apocalyptic number.

42103131302431 is a deficient number, since it is larger than the sum of its proper divisors (3497821401).

42103131302431 is a wasteful number, since it uses less digits than its factorization.

42103131302431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497821400.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 42103131302431 its reverse (13420313130124), we get a palindrome (55523444432555).

The spelling of 42103131302431 in words is "forty-two trillion, one hundred three billion, one hundred thirty-one million, three hundred two thousand, four hundred thirty-one".