40302131293 has 4 divisors (see below), whose sum is σ = 40513137408. Its totient is φ = 40091125180.

The previous prime is 40302131279. The next prime is 40302131321. The reversal of 40302131293 is 39213120304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40302131293 - 2²⁵ = 40268576861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40302131273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105502771 + ... + 105503152.

It is an arithmetic number, because the mean of its divisors is an integer number (10128284352).

Almost surely, 2^40302131293 is an apocalyptic number.

It is an amenable number.

40302131293 is a deficient number, since it is larger than the sum of its proper divisors (211006115).

40302131293 is a wasteful number, since it uses less digits than its factorization.

40302131293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211006114.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 40302131293 its reverse (39213120304), we get a palindrome (79515251597).

The spelling of 40302131293 in words is "forty billion, three hundred two million, one hundred thirty-one thousand, two hundred ninety-three".