2142315431 has 4 divisors (see below), whose sum is σ = 2142589512. Its totient is φ = 2142041352.

The previous prime is 2142315389. The next prime is 2142315449. The reversal of 2142315431 is 1345132412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2142315431 is a prime.

It is a super-2 number, since 2×2142315431² = 9179030811801431522, 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 2142315431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142315631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124961 + ... + 141066.

It is an arithmetic number, because the mean of its divisors is an integer number (535647378).

Almost surely, 2^2142315431 is an apocalyptic number.

2142315431 is a deficient number, since it is larger than the sum of its proper divisors (274081).

2142315431 is an equidigital number, since it uses as much as digits as its factorization.

2142315431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274080.

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

The square root of 2142315431 is about 46285.1534619904. The cubic root of 2142315431 is about 1289.1233414382.

Adding to 2142315431 its reverse (1345132412), we get a palindrome (3487447843).

The spelling of 2142315431 in words is "two billion, one hundred forty-two million, three hundred fifteen thousand, four hundred thirty-one".