2145431430 has 24 divisors (see below), whose sum is σ = 5578121952. Its totient is φ = 572115024.

The previous prime is 2145431429. The next prime is 2145431443. The reversal of 2145431430 is 341345412.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2145431394 and 2145431403.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 11918974 + ... + 11919153.

It is an arithmetic number, because the mean of its divisors is an integer number (232421748).

Almost surely, 2^2145431430 is an apocalyptic number.

2145431430 is an abundant number, since it is smaller than the sum of its proper divisors (3432690522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145431430 is a wasteful number, since it uses less digits than its factorization.

2145431430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23838140 (or 23838137 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2145431430 is about 46318.8021218166. The cubic root of 2145431430 is about 1289.7480488654.

Adding to 2145431430 its reverse (341345412), we get a palindrome (2486776842).

The spelling of 2145431430 in words is "two billion, one hundred forty-five million, four hundred thirty-one thousand, four hundred thirty".