2145431507 has 2 divisors, whose sum is σ = 2145431508. Its totient is φ = 2145431506.

The previous prime is 2145431489. The next prime is 2145431527. The reversal of 2145431507 is 7051345412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145431507 - 2⁶ = 2145431443 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145431527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072715753 + 1072715754.

It is an arithmetic number, because the mean of its divisors is an integer number (1072715754).

Almost surely, 2^2145431507 is an apocalyptic number.

2145431507 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145431507 is an equidigital number, since it uses as much as digits as its factorization.

2145431507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 2145431507 is about 46318.8029530125. The cubic root of 2145431507 is about 1289.7480642952.

Adding to 2145431507 its reverse (7051345412), we get a palindrome (9196776919).

The spelling of 2145431507 in words is "two billion, one hundred forty-five million, four hundred thirty-one thousand, five hundred seven".