235142445431 has 4 divisors (see below), whose sum is σ = 235194141000. Its totient is φ = 235090749864.

The previous prime is 235142445427. The next prime is 235142445449. The reversal of 235142445431 is 134544241532.

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 235142445431 - 2² = 235142445427 is a prime.

It is a super-2 number, since 2×235142445431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235142445331) 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, 25840961 + ... + 25850058.

It is an arithmetic number, because the mean of its divisors is an integer number (58798535250).

Almost surely, 2^235142445431 is an apocalyptic number.

235142445431 is a deficient number, since it is larger than the sum of its proper divisors (51695569).

235142445431 is an equidigital number, since it uses as much as digits as its factorization.

235142445431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51695568.

The product of its digits is 230400, while the sum is 38.

Adding to 235142445431 its reverse (134544241532), we get a palindrome (369686686963).

The spelling of 235142445431 in words is "two hundred thirty-five billion, one hundred forty-two million, four hundred forty-five thousand, four hundred thirty-one".