2135142431 has 4 divisors (see below), whose sum is σ = 2135238072. Its totient is φ = 2135046792.

The previous prime is 2135142419. The next prime is 2135142473. The reversal of 2135142431 is 1342415312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2135142431 - 2²⁶ = 2068033567 is a prime.

It is a super-2 number, since 2×2135142431² = 9117666401313179522, which 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 2135142431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135142731) 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, 5441 + ... + 65573.

It is an arithmetic number, because the mean of its divisors is an integer number (533809518).

Almost surely, 2^2135142431 is an apocalyptic number.

2135142431 is a deficient number, since it is larger than the sum of its proper divisors (95641).

2135142431 is an equidigital number, since it uses as much as digits as its factorization.

2135142431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95640.

The product of its digits is 2880, while the sum is 26.

The square root of 2135142431 is about 46207.6014417541. The cubic root of 2135142431 is about 1287.6829651186.

Adding to 2135142431 its reverse (1342415312), we get a palindrome (3477557743).

The spelling of 2135142431 in words is "two billion, one hundred thirty-five million, one hundred forty-two thousand, four hundred thirty-one".