31210404142 has 12 divisors (see below), whose sum is σ = 49731458040. Its totient is φ = 14687248736.

The previous prime is 31210404133. The next prime is 31210404143. The reversal of 31210404142 is 24140401213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31210404143) 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 5 ways as a sum of consecutive naturals, for example, 26998042 + ... + 26999197.

It is an arithmetic number, because the mean of its divisors is an integer number (4144288170).

Almost surely, 2^31210404142 is an apocalyptic number.

31210404142 is a deficient number, since it is larger than the sum of its proper divisors (18521053898).

31210404142 is a wasteful number, since it uses less digits than its factorization.

31210404142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53997275 (or 53997258 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31210404142 its reverse (24140401213), we get a palindrome (55350805355).

The spelling of 31210404142 in words is "thirty-one billion, two hundred ten million, four hundred four thousand, one hundred forty-two".