31045240342 has 16 divisors (see below), whose sum is σ = 49022305200. Its totient is φ = 14704588800.

The previous prime is 31045240339. The next prime is 31045240349. The reversal of 31045240342 is 24304254013.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31045240342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31045240349) 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 7 ways as a sum of consecutive naturals, for example, 864342 + ... + 899542.

It is an arithmetic number, because the mean of its divisors is an integer number (3063894075).

Almost surely, 2^31045240342 is an apocalyptic number.

31045240342 is a deficient number, since it is larger than the sum of its proper divisors (17977064858).

31045240342 is a wasteful number, since it uses less digits than its factorization.

31045240342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58431.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 31045240342 its reverse (24304254013), we get a palindrome (55349494355).

The spelling of 31045240342 in words is "thirty-one billion, forty-five million, two hundred forty thousand, three hundred forty-two".