42353131 has 4 divisors (see below), whose sum is σ = 42384600. Its totient is φ = 42321664.

The previous prime is 42353119. The next prime is 42353141. The reversal of 42353131 is 13135324.

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 42353131 - 2¹¹ = 42351083 is a prime.

It is a super-2 number, since 2×42353131² = 3587575411006322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42353141) 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, 13621 + ... + 16438.

It is an arithmetic number, because the mean of its divisors is an integer number (10596150).

Almost surely, 2^42353131 is an apocalyptic number.

42353131 is a deficient number, since it is larger than the sum of its proper divisors (31469).

42353131 is a wasteful number, since it uses less digits than its factorization.

42353131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31468.

The product of its digits is 1080, while the sum is 22.

The square root of 42353131 is about 6507.9283185972. The cubic root of 42353131 is about 348.5741474574.

Adding to 42353131 its reverse (13135324), we get a palindrome (55488455).

The spelling of 42353131 in words is "forty-two million, three hundred fifty-three thousand, one hundred thirty-one".