42343131451 has 4 divisors (see below), whose sum is σ = 42487647552. Its totient is φ = 42198615352.

The previous prime is 42343131433. The next prime is 42343131461. The reversal of 42343131451 is 15413134324.

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 42343131451 - 2⁵ = 42343131419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42343131461) 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, 72257611 + ... + 72258196.

It is an arithmetic number, because the mean of its divisors is an integer number (10621911888).

Almost surely, 2^42343131451 is an apocalyptic number.

42343131451 is a deficient number, since it is larger than the sum of its proper divisors (144516101).

42343131451 is a wasteful number, since it uses less digits than its factorization.

42343131451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144516100.

The product of its digits is 17280, while the sum is 31.

Adding to 42343131451 its reverse (15413134324), we get a palindrome (57756265775).

The spelling of 42343131451 in words is "forty-two billion, three hundred forty-three million, one hundred thirty-one thousand, four hundred fifty-one".