31224500042 has 8 divisors (see below), whose sum is σ = 48451810500. Its totient is φ = 15073896544.

The previous prime is 31224500039. The next prime is 31224500063. The reversal of 31224500042 is 24000542213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31223243401 + 1256641 = 176701^2 + 1121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31224499990 and 31224500017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269176667 + ... + 269176782.

Almost surely, 2^31224500042 is an apocalyptic number.

31224500042 is a deficient number, since it is larger than the sum of its proper divisors (17227310458).

31224500042 is a wasteful number, since it uses less digits than its factorization.

31224500042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538353480.

The product of its (nonzero) digits is 1920, while the sum is 23.

The spelling of 31224500042 in words is "thirty-one billion, two hundred twenty-four million, five hundred thousand, forty-two".