31200421342 has 16 divisors (see below), whose sum is σ = 49540368240. Its totient is φ = 14711985792.

The previous prime is 31200421327. The next prime is 31200421381. The reversal of 31200421342 is 24312400213.

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, 6252603 + ... + 6257590.

It is an arithmetic number, because the mean of its divisors is an integer number (3096273015).

Almost surely, 2^31200421342 is an apocalyptic number.

31200421342 is a deficient number, since it is larger than the sum of its proper divisors (18339946898).

31200421342 is a wasteful number, since it uses less digits than its factorization.

31200421342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12510267.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31200421342 its reverse (24312400213), we get a palindrome (55512821555).

The spelling of 31200421342 in words is "thirty-one billion, two hundred million, four hundred twenty-one thousand, three hundred forty-two".