31234030042 has 16 divisors (see below), whose sum is σ = 49534158240. Its totient is φ = 14729886288.

The previous prime is 31234030039. The next prime is 31234030049. The reversal of 31234030042 is 24003043213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31234029995 and 31234030022.

It is not an unprimeable number, because it can be changed into a prime (31234030049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1801833 + ... + 1819084.

It is an arithmetic number, because the mean of its divisors is an integer number (3095884890).

Almost surely, 2^31234030042 is an apocalyptic number.

31234030042 is a deficient number, since it is larger than the sum of its proper divisors (18300128198).

31234030042 is a wasteful number, since it uses less digits than its factorization.

31234030042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621165.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31234030042 its reverse (24003043213), we get a palindrome (55237073255).

The spelling of 31234030042 in words is "thirty-one billion, two hundred thirty-four million, thirty thousand, forty-two".