31304420142 has 16 divisors (see below), whose sum is σ = 62926654032. Its totient is φ = 10381837760.

The previous prime is 31304420123. The next prime is 31304420167. The reversal of 31304420142 is 24102440313.

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 7 ways as a sum of consecutive naturals, for example, 13240959 + ... + 13243322.

It is an arithmetic number, because the mean of its divisors is an integer number (3932915877).

Almost surely, 2^31304420142 is an apocalyptic number.

31304420142 is an abundant number, since it is smaller than the sum of its proper divisors (31622233890).

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

31304420142 is a wasteful number, since it uses less digits than its factorization.

31304420142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26484483.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31304420142 its reverse (24102440313), we get a palindrome (55406860455).

The spelling of 31304420142 in words is "thirty-one billion, three hundred four million, four hundred twenty thousand, one hundred forty-two".