31200324442 has 16 divisors (see below), whose sum is σ = 53907425280. Its totient is φ = 13266278928.

The previous prime is 31200324437. The next prime is 31200324461. The reversal of 31200324442 is 24442300213.

It is a happy number.

It is a super-2 number, since 2×31200324442² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8772217 + ... + 8775772.

It is an arithmetic number, because the mean of its divisors is an integer number (3369214080).

Almost surely, 2^31200324442 is an apocalyptic number.

31200324442 is a deficient number, since it is larger than the sum of its proper divisors (22707100838).

31200324442 is a wasteful number, since it uses less digits than its factorization.

31200324442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17548125.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 31200324442 its reverse (24442300213), we get a palindrome (55642624655).

The spelling of 31200324442 in words is "thirty-one billion, two hundred million, three hundred twenty-four thousand, four hundred forty-two".