31401402320042 has 16 divisors (see below), whose sum is σ = 47340898416000. Its totient is φ = 15621109851600.

The previous prime is 31401402320033. The next prime is 31401402320063. The reversal of 31401402320042 is 24002320410413.

It is a junction number, because it is equal to n+sod(n) for n = 31401402319993 and 31401402320020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7286792 + ... + 10765692.

It is an arithmetic number, because the mean of its divisors is an integer number (2958806151000).

Almost surely, 2^{31401402320042} is an apocalyptic number.

31401402320042 is a deficient number, since it is larger than the sum of its proper divisors (15939496095958).

31401402320042 is a wasteful number, since it uses less digits than its factorization.

31401402320042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501781.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31401402320042 its reverse (24002320410413), we get a palindrome (55403722730455).

The spelling of 31401402320042 in words is "thirty-one trillion, four hundred one billion, four hundred two million, three hundred twenty thousand, forty-two".